diff --git a/.gitattributes b/.gitattributes
index 0cc7c22b..6ee91dd4 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,6 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+
 ## Unity ##
 *.cs diff=csharp text
 *.cginc text
@@ -13,8 +14,9 @@
 *.asset merge=unityyamlmerge eol=lf
 *.meta merge=unityyamlmerge eol=lf
 *.controller merge=unityyamlmerge eol=lf
+
 ## git-lfs ##
-#Image
+# Image
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.png filter=lfs diff=lfs merge=lfs -text
@@ -22,31 +24,35 @@
 *.psd filter=lfs diff=lfs merge=lfs -text
 *.ai filter=lfs diff=lfs merge=lfs -text
 *.tif filter=lfs diff=lfs merge=lfs -text
-#Audio
+*.tga filter=lfs diff=lfs merge=lfs -text
+*.exr filter=lfs diff=lfs merge=lfs -text
+
+# Audio
 *.mp3 filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
 *.ogg filter=lfs diff=lfs merge=lfs -text
-#Video
+*.aif filter=lfs diff=lfs merge=lfs -text
+
+# Video
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.mov filter=lfs diff=lfs merge=lfs -text
-#3D Object
-*.FBX filter=lfs diff=lfs merge=lfs -text
+
+# 3D Object
 *.fbx filter=lfs diff=lfs merge=lfs -text
 *.blend filter=lfs diff=lfs merge=lfs -text
 *.obj filter=lfs diff=lfs merge=lfs -text
-#ETC
-*.a filter=lfs diff=lfs merge=lfs -text
-*.exr filter=lfs diff=lfs merge=lfs -text
-*.tga filter=lfs diff=lfs merge=lfs -text
+*.lxo filter=lfs diff=lfs merge=lfs -text
+
+# Fonts / Docs / Archives / Binaries
+*.ttf filter=lfs diff=lfs merge=lfs -text
 *.pdf filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.dll filter=lfs diff=lfs merge=lfs -text
+*.a filter=lfs diff=lfs merge=lfs -text
+*.exe filter=lfs diff=lfs merge=lfs -text
 *.unitypackage filter=lfs diff=lfs merge=lfs -text
-*.aif filter=lfs diff=lfs merge=lfs -text
-*.ttf filter=lfs diff=lfs merge=lfs -text
+*.srcaar filter=lfs diff=lfs merge=lfs -text
+
+# Other
 *.rns filter=lfs diff=lfs merge=lfs -text
-*.reason filter=lfs diff=lfs merge=lfs -text
-*.lxo filter=lfs diff=lfs merge=lfs -text
-Assets/Firebase/Editor/generate_xml_from_google_services_json.exe filter=lfs diff=lfs merge=lfs -text
-Assets/Firebase/Editor/network_request.exe filter=lfs diff=lfs merge=lfs -text
-Assets/Firebase/m2repository/com/google/firebase/firebase-app-unity/12.5.0/firebase-app-unity-12.5.0.srcaar filter=lfs diff=lfs merge=lfs -text
+*.reason filter=lfs diff=lfs merge=lfs -text
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.meta b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.meta
new file mode 100644
index 00000000..6e78a859
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 2657f564ee47c514db4e1cada2770fbc
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 1.asset b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 1.asset
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 1.asset
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 1.asset
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 1.asset.meta b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 1.asset.meta
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 1.asset.meta
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 1.asset.meta
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 2.asset b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 2.asset
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 2.asset
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 2.asset
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 2.asset.meta b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 2.asset.meta
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile 2.asset.meta
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile 2.asset.meta
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.asset b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile.asset
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.asset
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile.asset
diff --git a/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.asset.meta b/Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile.asset.meta
similarity index 100%
rename from Assets/Features/VoxelWorld/Data/VoxelBiomeProfile.asset.meta
rename to Assets/Features/VoxelWorld/Data/VoxelBiomeProfile/VoxelBiomeProfile.asset.meta
diff --git a/Assets/Features/VoxelWorld/Data/VoxelWorldConfig.asset b/Assets/Features/VoxelWorld/Data/VoxelWorldConfig.asset
index 1d1de8b2..08d31a21 100644
--- a/Assets/Features/VoxelWorld/Data/VoxelWorldConfig.asset
+++ b/Assets/Features/VoxelWorld/Data/VoxelWorldConfig.asset
@@ -36,6 +36,8 @@ MonoBehaviour:
   - {fileID: 11400000, guid: 6d0dbe510ed048440a3925ef40aeeb5b, type: 2}
   biomeNoiseScale: 0.02
   biomeSize: 6
+  placementCollections:
+  - {fileID: 11400000, guid: b91d23f483c774f4dbb1a77660881d87, type: 2}
   maxAsyncChunkJobs: 2
   maxChunkBuildsPerFrame: 1
   maxChunkMeshBuildsPerFrame: 1
diff --git a/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset b/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset
new file mode 100644
index 00000000..cc0ff875
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset
@@ -0,0 +1,28 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 0f36445faa7413742b67196646eb2631, type: 3}
+  m_Name: WorldPrefabCollection
+  m_EditorClassIdentifier: VoxelWorld.Runtime::InfiniteWorld.VoxelWorld.WorldPrefabCollection
+  maxPlacementsPerChunk: 2
+  attemptsPerPlacement: 8
+  chunkEdgePadding: 1
+  entries:
+  - id: EntranceCrypt
+    prefab: {fileID: 155468, guid: ea0c7071e67bf1c43940a8ab3ea121f8, type: 3}
+    weight: 10
+    spawnChancePercent: 5
+    placementMode: 1
+    footprint: {x: 2, y: 2}
+    clearance: 4
+    flattenPadding: 4
+    flattenSearchRadius: 4
+    allowRotations: 1
diff --git a/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset.meta b/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset.meta
new file mode 100644
index 00000000..b5216c04
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Data/WorldPrefabCollection.asset.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b91d23f483c774f4dbb1a77660881d87
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Features/VoxelWorld/Prefabs/TestPlayer.prefab b/Assets/Features/VoxelWorld/Prefabs/TestPlayer.prefab
index 0c843d96..24db32a0 100644
--- a/Assets/Features/VoxelWorld/Prefabs/TestPlayer.prefab
+++ b/Assets/Features/VoxelWorld/Prefabs/TestPlayer.prefab
@@ -444,7 +444,12 @@ MonoBehaviour:
   _addedNetworkObject: {fileID: 6486868354670318784}
   _networkObjectCache: {fileID: 6486868354670318784}
   _moveSpeed: 30
+  _sprintMultiplier: 2
+  _slowMultiplier: 0.5
   _characterController: {fileID: 9116505237391369033}
+  _moveAction: {fileID: -1680190386980627800, guid: 2bcd2660ca9b64942af0de543d8d7100, type: 3}
+  _sprintAction: {fileID: -7471211009204490832, guid: 2bcd2660ca9b64942af0de543d8d7100, type: 3}
+  _slowAction: {fileID: 7040659881675835329, guid: 2bcd2660ca9b64942af0de543d8d7100, type: 3}
 --- !u!114 &5771682633975047943
 MonoBehaviour:
   m_ObjectHideFlags: 0
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldConfig.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldConfig.cs
index a9c4b866..5af18ffa 100644
--- a/Assets/Features/VoxelWorld/Runtime/VoxelWorldConfig.cs
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldConfig.cs
@@ -37,6 +37,9 @@ namespace InfiniteWorld.VoxelWorld
         public float biomeNoiseScale = 0.02f;
         [Min(1f)] public float biomeSize = 48f;
 
+        [Header("Placements")]
+        public List<WorldPrefabCollection> placementCollections = new List<WorldPrefabCollection>();
+
         [Header("Runtime")]
         [Min(1)] public int maxAsyncChunkJobs = 2;
         [Min(1)] public int maxChunkBuildsPerFrame = 1;
@@ -50,6 +53,7 @@ namespace InfiniteWorld.VoxelWorld
     internal readonly struct VoxelWorldResolvedSettings
     {
         private static readonly IReadOnlyList<VoxelBiomeProfile> EmptyBiomes = System.Array.Empty<VoxelBiomeProfile>();
+        private static readonly IReadOnlyList<WorldPrefabCollectionRuntime> EmptyPlacementCollections = System.Array.Empty<WorldPrefabCollectionRuntime>();
 
         public static readonly VoxelWorldResolvedSettings Default = Resolve(null);
 
@@ -75,6 +79,7 @@ namespace InfiniteWorld.VoxelWorld
             IReadOnlyList<VoxelBiomeProfile> biomeProfiles,
             float biomeNoiseScale,
             float biomeSize,
+            IReadOnlyList<WorldPrefabCollectionRuntime> placementCollections,
             int maxAsyncChunkJobs,
             int maxChunkBuildsPerFrame,
             int maxChunkMeshBuildsPerFrame,
@@ -104,6 +109,7 @@ namespace InfiniteWorld.VoxelWorld
             BiomeProfiles = biomeProfiles;
             BiomeNoiseScale = biomeNoiseScale;
             BiomeSize = biomeSize;
+            PlacementCollections = placementCollections;
             MaxAsyncChunkJobs = maxAsyncChunkJobs;
             MaxChunkBuildsPerFrame = maxChunkBuildsPerFrame;
             MaxChunkMeshBuildsPerFrame = maxChunkMeshBuildsPerFrame;
@@ -134,6 +140,7 @@ namespace InfiniteWorld.VoxelWorld
         public IReadOnlyList<VoxelBiomeProfile> BiomeProfiles { get; }
         public float BiomeNoiseScale { get; }
         public float BiomeSize { get; }
+        public IReadOnlyList<WorldPrefabCollectionRuntime> PlacementCollections { get; }
         public int MaxAsyncChunkJobs { get; }
         public int MaxChunkBuildsPerFrame { get; }
         public int MaxChunkMeshBuildsPerFrame { get; }
@@ -147,6 +154,7 @@ namespace InfiniteWorld.VoxelWorld
             IReadOnlyList<VoxelBiomeProfile> biomes = config != null && config.biomeProfiles != null
                 ? config.biomeProfiles
                 : EmptyBiomes;
+            IReadOnlyList<WorldPrefabCollectionRuntime> placements = ResolvePlacementCollections(config);
 
             return new VoxelWorldResolvedSettings(
                 Mathf.Max(8, config != null ? config.chunkSize : 16),
@@ -170,6 +178,7 @@ namespace InfiniteWorld.VoxelWorld
                 biomes,
                 config != null ? config.biomeNoiseScale : 0.02f,
                 Mathf.Max(1f, config != null ? config.biomeSize : 48f),
+                placements,
                 Mathf.Max(1, config != null ? config.maxAsyncChunkJobs : 2),
                 Mathf.Max(1, config != null ? config.maxChunkBuildsPerFrame : 1),
                 Mathf.Max(1, config != null ? config.maxChunkMeshBuildsPerFrame : 1),
@@ -178,5 +187,59 @@ namespace InfiniteWorld.VoxelWorld
                 Mathf.Max(1, config != null ? config.renderRegionSizeInChunks : 4),
                 Mathf.Max(1, config != null ? config.maxRegionBuildsPerFrame : 1));
         }
+
+        private static IReadOnlyList<WorldPrefabCollectionRuntime> ResolvePlacementCollections(VoxelWorldConfig config)
+        {
+            if (config == null || config.placementCollections == null || config.placementCollections.Count == 0)
+            {
+                return EmptyPlacementCollections;
+            }
+
+            List<WorldPrefabCollectionRuntime> result = new List<WorldPrefabCollectionRuntime>(config.placementCollections.Count);
+            for (int collectionIndex = 0; collectionIndex < config.placementCollections.Count; collectionIndex++)
+            {
+                WorldPrefabCollection collection = config.placementCollections[collectionIndex];
+                if (WorldPlacementValidation.TryGetCollectionBlockerReason(collection, out _))
+                {
+                    continue;
+                }
+
+                List<WorldPrefabEntryRuntime> entries = new List<WorldPrefabEntryRuntime>();
+                HashSet<string> usedIds = new HashSet<string>();
+                if (collection.entries != null)
+                {
+                    for (int entryIndex = 0; entryIndex < collection.entries.Count; entryIndex++)
+                    {
+                        WorldPrefabEntry entry = collection.entries[entryIndex];
+                        if (WorldPlacementValidation.TryGetEntryBlockerReason(entry, usedIds, out _))
+                        {
+                            continue;
+                        }
+
+                        entries.Add(new WorldPrefabEntryRuntime(
+                            entryIndex,
+                            entry.id,
+                            entry.weight,
+                            entry.spawnChancePercent,
+                            entry.placementMode,
+                            entry.footprint,
+                            entry.clearance,
+                            entry.flattenPadding,
+                            entry.flattenSearchRadius,
+                            entry.allowRotations,
+                            entry.prefab != null));
+                    }
+                }
+
+                result.Add(new WorldPrefabCollectionRuntime(
+                    collectionIndex,
+                    Mathf.Max(0, collection.maxPlacementsPerChunk),
+                    Mathf.Max(1, collection.attemptsPerPlacement),
+                    Mathf.Max(0, collection.chunkEdgePadding),
+                    entries));
+            }
+
+            return result.Count > 0 ? result : EmptyPlacementCollections;
+        }
     }
 }
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Generation.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Generation.cs
index 0e99dd99..e5f7d48f 100644
--- a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Generation.cs
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Generation.cs
@@ -44,6 +44,8 @@ namespace InfiniteWorld.VoxelWorld
                 }
             }
 
+            ApplyChunkPlacementHeights(coord, heights);
+
             return new ChunkBuildResult(coord, heights, biomeIndices, version, session, runtimeId);
         }
 
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Mesh.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Mesh.cs
index 7d458478..35cd6586 100644
--- a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Mesh.cs
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Mesh.cs
@@ -435,14 +435,14 @@ namespace InfiniteWorld.VoxelWorld
 
             if (!chunks.TryGetValue(coord, out ChunkRuntime runtime) || !runtime.HasData)
             {
-                return SampleRock(worldCell) ? SampleHeight(worldCell) : 0;
+                return GetSampledFinalHeightAtWorldCell(worldCell);
             }
 
             int localX = worldCell.x - coord.x * chunkSize;
             int localZ = worldCell.y - coord.y * chunkSize;
             if (localX < 0 || localZ < 0 || localX >= chunkSize || localZ >= chunkSize)
             {
-                return SampleRock(worldCell) ? SampleHeight(worldCell) : 0;
+                return GetSampledFinalHeightAtWorldCell(worldCell);
             }
 
             return runtime.Heights[localZ * chunkSize + localX];
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs
new file mode 100644
index 00000000..c16132d9
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs
@@ -0,0 +1,193 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace InfiniteWorld.VoxelWorld
+{
+    public sealed partial class VoxelWorldGenerator
+    {
+        private readonly Dictionary<Vector2Int, WorldChunkPlacementPlan> chunkPlacementPlans = new Dictionary<Vector2Int, WorldChunkPlacementPlan>();
+        private readonly object placementPlanLock = new object();
+        private int placementValidationSignature = int.MinValue;
+        private IReadOnlyList<WorldPrefabCollectionRuntime> placementCollections => settings.PlacementCollections;
+
+        public WorldChunkPlacementPlan GetChunkPlacementPlan(Vector2Int chunkCoord)
+        {
+            return GetOrCreateChunkPlacementPlan(chunkCoord);
+        }
+
+        public int GetBaseHeightAtWorldCell(Vector2Int worldCell)
+        {
+            return SampleRock(worldCell) ? SampleHeight(worldCell) : 0;
+        }
+
+        public int GetFinalHeightAtWorldCell(Vector2Int worldCell)
+        {
+            return GetSampledFinalHeightAtWorldCell(worldCell);
+        }
+
+        public byte GetBiomeIndexAtWorldCell(Vector2Int worldCell)
+        {
+            return SampleBiomeIndex(worldCell);
+        }
+
+        private WorldChunkPlacementPlan GetOrCreateChunkPlacementPlan(Vector2Int chunkCoord)
+        {
+            lock (placementPlanLock)
+            {
+                if (chunkPlacementPlans.TryGetValue(chunkCoord, out WorldChunkPlacementPlan cachedPlan))
+                {
+                    return cachedPlan;
+                }
+            }
+
+            WorldChunkPlacementPlan plan = WorldSpawnPlanner.PlanChunk(seed, chunkCoord, chunkSize, placementCollections, GetBaseHeightAtWorldCell);
+
+            lock (placementPlanLock)
+            {
+                if (chunkPlacementPlans.TryGetValue(chunkCoord, out WorldChunkPlacementPlan cachedPlan))
+                {
+                    return cachedPlan;
+                }
+
+                chunkPlacementPlans[chunkCoord] = plan;
+                return plan;
+            }
+        }
+
+        private int GetSampledFinalHeightAtWorldCell(Vector2Int worldCell)
+        {
+            int baseHeight = GetBaseHeightAtWorldCell(worldCell);
+            Vector2Int chunkCoord = new Vector2Int(
+                Mathf.FloorToInt(worldCell.x / (float)chunkSize),
+                Mathf.FloorToInt(worldCell.y / (float)chunkSize));
+            return GetOrCreateChunkPlacementPlan(chunkCoord).GetFinalHeight(worldCell, baseHeight);
+        }
+
+        private void ApplyChunkPlacementHeights(Vector2Int chunkCoord, int[] heights)
+        {
+            WorldChunkPlacementPlan plan = GetOrCreateChunkPlacementPlan(chunkCoord);
+            if (!plan.HasFlattening)
+            {
+                return;
+            }
+
+            Vector2Int chunkOrigin = new Vector2Int(chunkCoord.x * chunkSize, chunkCoord.y * chunkSize);
+            for (int z = 0; z < chunkSize; z++)
+            {
+                for (int x = 0; x < chunkSize; x++)
+                {
+                    Vector2Int worldCell = new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + z);
+                    heights[z * chunkSize + x] = plan.GetFinalHeight(worldCell, heights[z * chunkSize + x]);
+                }
+            }
+        }
+
+        private void CleanupPlacementPlans()
+        {
+            lock (placementPlanLock)
+            {
+                chunkPlacementPlans.Clear();
+            }
+        }
+
+        private void ValidatePlacementCollectionsIfNeeded()
+        {
+            int signature = ComputePlacementValidationSignature();
+            if (signature == placementValidationSignature)
+            {
+                return;
+            }
+
+            placementValidationSignature = signature;
+            ValidatePlacementCollections();
+        }
+
+        private int ComputePlacementValidationSignature()
+        {
+            unchecked
+            {
+                int hash = 17;
+                hash = hash * 31 + (config != null ? config.GetInstanceID() : 0);
+                if (config == null || config.placementCollections == null)
+                {
+                    return hash;
+                }
+
+                hash = hash * 31 + config.placementCollections.Count;
+                for (int collectionIndex = 0; collectionIndex < config.placementCollections.Count; collectionIndex++)
+                {
+                    WorldPrefabCollection collection = config.placementCollections[collectionIndex];
+                    hash = hash * 31 + (collection != null ? collection.GetInstanceID() : 0);
+                    if (collection == null)
+                    {
+                        continue;
+                    }
+
+                    hash = hash * 31 + collection.maxPlacementsPerChunk;
+                    hash = hash * 31 + collection.attemptsPerPlacement;
+                    hash = hash * 31 + collection.chunkEdgePadding;
+                    hash = hash * 31 + (collection.entries != null ? collection.entries.Count : 0);
+                    if (collection.entries == null)
+                    {
+                        continue;
+                    }
+
+                    for (int entryIndex = 0; entryIndex < collection.entries.Count; entryIndex++)
+                    {
+                        WorldPrefabEntry entry = collection.entries[entryIndex];
+                        hash = hash * 31 + (entry != null ? entry.id?.GetHashCode() ?? 0 : 0);
+                        if (entry == null)
+                        {
+                            continue;
+                        }
+
+                        hash = hash * 31 + (entry.prefab != null ? entry.prefab.GetInstanceID() : 0);
+                        hash = hash * 31 + entry.weight.GetHashCode();
+                        hash = hash * 31 + entry.spawnChancePercent.GetHashCode();
+                        hash = hash * 31 + (int)entry.placementMode;
+                        hash = hash * 31 + entry.footprint.x;
+                        hash = hash * 31 + entry.footprint.y;
+                        hash = hash * 31 + entry.clearance;
+                        hash = hash * 31 + entry.flattenPadding;
+                        hash = hash * 31 + entry.flattenSearchRadius;
+                        hash = hash * 31 + (entry.allowRotations ? 1 : 0);
+                    }
+                }
+
+                return hash;
+            }
+        }
+
+        private void ValidatePlacementCollections()
+        {
+            if (config == null || config.placementCollections == null || config.placementCollections.Count == 0)
+            {
+                return;
+            }
+
+            for (int collectionIndex = 0; collectionIndex < config.placementCollections.Count; collectionIndex++)
+            {
+                WorldPrefabCollection collection = config.placementCollections[collectionIndex];
+                string collectionName = collection != null ? collection.name : $"Collection[{collectionIndex}]";
+                if (WorldPlacementValidation.TryGetCollectionBlockerReason(collection, out string collectionReason))
+                {
+                    Debug.LogError($"[VoxelWorld] Collection '{collectionName}' will not spawn: {collectionReason}", collection != null ? collection : this);
+                    continue;
+                }
+
+                HashSet<string> usedIds = new HashSet<string>();
+                for (int entryIndex = 0; entryIndex < collection.entries.Count; entryIndex++)
+                {
+                    WorldPrefabEntry entry = collection.entries[entryIndex];
+                    string entryId = entry != null && !string.IsNullOrWhiteSpace(entry.id) ? entry.id : $"entry #{entryIndex}";
+                    if (!WorldPlacementValidation.TryGetEntryBlockerReason(entry, usedIds, out string entryReason))
+                    {
+                        continue;
+                    }
+
+                    Debug.LogError($"[VoxelWorld] Collection '{collectionName}' entry #{entryIndex} ('{entryId}') will not spawn: {entryReason}", collection);
+                }
+            }
+        }
+    }
+}
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs.meta b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs.meta
new file mode 100644
index 00000000..7e4dceeb
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Placements.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: aa5a2f44cc77fe844a2f0b14725a6dd8
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs
new file mode 100644
index 00000000..d480bdf4
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs
@@ -0,0 +1,232 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace InfiniteWorld.VoxelWorld
+{
+    public sealed partial class VoxelWorldGenerator
+    {
+        private readonly Dictionary<Vector2Int, List<SpawnedPlacementRuntime>> spawnedPlacementsByChunk = new Dictionary<Vector2Int, List<SpawnedPlacementRuntime>>();
+        private readonly Dictionary<long, SpawnedPlacementRuntime> spawnedPlacementsById = new Dictionary<long, SpawnedPlacementRuntime>();
+        private readonly HashSet<long> disabledSpawnIds = new HashSet<long>();
+
+        private Transform placementRoot;
+
+        public IReadOnlyCollection<long> DisabledSpawnIds => disabledSpawnIds;
+
+        public bool IsSpawnDisabled(long spawnId)
+        {
+            return disabledSpawnIds.Contains(spawnId);
+        }
+
+        public bool DisableSpawn(long spawnId)
+        {
+            if (!disabledSpawnIds.Add(spawnId))
+            {
+                return false;
+            }
+
+            if (spawnedPlacementsById.TryGetValue(spawnId, out SpawnedPlacementRuntime runtime))
+            {
+                RemoveSpawnedPlacement(runtime);
+            }
+
+            return true;
+        }
+
+        public bool EnableSpawn(long spawnId)
+        {
+            return disabledSpawnIds.Remove(spawnId);
+        }
+
+        public void ClearDisabledSpawns()
+        {
+            disabledSpawnIds.Clear();
+        }
+
+        private void EnsurePlacementRoot()
+        {
+            if (placementRoot != null)
+            {
+                return;
+            }
+
+            Transform existing = transform.Find("WorldPlacements");
+            if (existing != null)
+            {
+                placementRoot = existing;
+                return;
+            }
+
+            GameObject root = new GameObject("WorldPlacements");
+            root.transform.SetParent(transform, false);
+            placementRoot = root.transform;
+        }
+
+        private void TrySpawnChunkPlacements(Vector2Int chunkCoord)
+        {
+            EnsurePlacementRoot();
+            if (placementRoot == null || spawnedPlacementsByChunk.ContainsKey(chunkCoord))
+            {
+                return;
+            }
+
+            WorldChunkPlacementPlan plan = GetChunkPlacementPlan(chunkCoord);
+            IReadOnlyList<WorldSpawnPoint> spawnPoints = plan.SpawnPoints;
+            if (spawnPoints == null || spawnPoints.Count == 0)
+            {
+                return;
+            }
+
+            List<SpawnedPlacementRuntime> chunkPlacements = new List<SpawnedPlacementRuntime>(spawnPoints.Count);
+            for (int i = 0; i < spawnPoints.Count; i++)
+            {
+                WorldSpawnPoint spawnPoint = spawnPoints[i];
+                if (disabledSpawnIds.Contains(spawnPoint.SpawnId) || spawnedPlacementsById.ContainsKey(spawnPoint.SpawnId))
+                {
+                    continue;
+                }
+
+                if (!TryResolveSpawnPrefab(spawnPoint, out GameObject prefab) || prefab == null)
+                {
+                    continue;
+                }
+
+                GameObject instance = Object.Instantiate(prefab, spawnPoint.Position, spawnPoint.Rotation, placementRoot);
+                instance.name = $"{prefab.name}_{spawnPoint.ChunkCoord.x}_{spawnPoint.ChunkCoord.y}_{spawnPoint.SpawnOrdinalInChunk}";
+                SpawnedPlacementRuntime runtime = new SpawnedPlacementRuntime(spawnPoint.SpawnId, chunkCoord, spawnPoint.CollectionIndex, spawnPoint.EntryIndex, instance);
+                chunkPlacements.Add(runtime);
+                spawnedPlacementsById.Add(runtime.SpawnId, runtime);
+            }
+
+            if (chunkPlacements.Count > 0)
+            {
+                spawnedPlacementsByChunk[chunkCoord] = chunkPlacements;
+            }
+        }
+
+        private bool TryResolveSpawnPrefab(WorldSpawnPoint spawnPoint, out GameObject prefab)
+        {
+            prefab = null;
+            if (config == null || config.placementCollections == null)
+            {
+                return false;
+            }
+
+            if (spawnPoint.CollectionIndex < 0 || spawnPoint.CollectionIndex >= config.placementCollections.Count)
+            {
+                return false;
+            }
+
+            WorldPrefabCollection collection = config.placementCollections[spawnPoint.CollectionIndex];
+            if (collection == null || collection.entries == null || spawnPoint.EntryIndex < 0 || spawnPoint.EntryIndex >= collection.entries.Count)
+            {
+                return false;
+            }
+
+            WorldPrefabEntry entry = collection.entries[spawnPoint.EntryIndex];
+            if (entry == null)
+            {
+                return false;
+            }
+
+            prefab = entry.prefab;
+            return prefab != null;
+        }
+
+        private void DespawnChunkPlacements(Vector2Int chunkCoord)
+        {
+            if (!spawnedPlacementsByChunk.TryGetValue(chunkCoord, out List<SpawnedPlacementRuntime> chunkPlacements))
+            {
+                return;
+            }
+
+            for (int i = 0; i < chunkPlacements.Count; i++)
+            {
+                SpawnedPlacementRuntime runtime = chunkPlacements[i];
+                spawnedPlacementsById.Remove(runtime.SpawnId);
+                DestroyPlacementInstance(runtime.Instance);
+            }
+
+            spawnedPlacementsByChunk.Remove(chunkCoord);
+        }
+
+        private void RemoveSpawnedPlacement(SpawnedPlacementRuntime runtime)
+        {
+            spawnedPlacementsById.Remove(runtime.SpawnId);
+            if (spawnedPlacementsByChunk.TryGetValue(runtime.ChunkCoord, out List<SpawnedPlacementRuntime> chunkPlacements))
+            {
+                chunkPlacements.RemoveAll(item => item.SpawnId == runtime.SpawnId);
+                if (chunkPlacements.Count == 0)
+                {
+                    spawnedPlacementsByChunk.Remove(runtime.ChunkCoord);
+                }
+            }
+
+            DestroyPlacementInstance(runtime.Instance);
+        }
+
+        private void CleanupSpawnedPlacements()
+        {
+            foreach (KeyValuePair<Vector2Int, List<SpawnedPlacementRuntime>> pair in spawnedPlacementsByChunk)
+            {
+                List<SpawnedPlacementRuntime> chunkPlacements = pair.Value;
+                for (int i = 0; i < chunkPlacements.Count; i++)
+                {
+                    DestroyPlacementInstance(chunkPlacements[i].Instance);
+                }
+            }
+
+            spawnedPlacementsByChunk.Clear();
+            spawnedPlacementsById.Clear();
+
+            if (placementRoot != null)
+            {
+                if (Application.isPlaying)
+                {
+                    Object.Destroy(placementRoot.gameObject);
+                }
+                else
+                {
+                    Object.DestroyImmediate(placementRoot.gameObject);
+                }
+
+                placementRoot = null;
+            }
+        }
+
+        private static void DestroyPlacementInstance(GameObject instance)
+        {
+            if (instance == null)
+            {
+                return;
+            }
+
+            if (Application.isPlaying)
+            {
+                Object.Destroy(instance);
+            }
+            else
+            {
+                Object.DestroyImmediate(instance);
+            }
+        }
+
+        private sealed class SpawnedPlacementRuntime
+        {
+            public SpawnedPlacementRuntime(long spawnId, Vector2Int chunkCoord, int collectionIndex, int entryIndex, GameObject instance)
+            {
+                SpawnId = spawnId;
+                ChunkCoord = chunkCoord;
+                CollectionIndex = collectionIndex;
+                EntryIndex = entryIndex;
+                Instance = instance;
+            }
+
+            public long SpawnId { get; }
+            public Vector2Int ChunkCoord { get; }
+            public int CollectionIndex { get; }
+            public int EntryIndex { get; }
+            public GameObject Instance { get; }
+        }
+    }
+}
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs.meta b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs.meta
new file mode 100644
index 00000000..e5663157
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.Spawns.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: f7d0d16ba43223c41bd21fbe9333d819
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.cs b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.cs
index 25a9216d..6a5924a1 100644
--- a/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.cs
+++ b/Assets/Features/VoxelWorld/Runtime/VoxelWorldGenerator.cs
@@ -84,6 +84,8 @@ namespace InfiniteWorld.VoxelWorld
             EnsureRuntimeData();
             EnsureChunkRoot();
             EnsureRegionRoot();
+            EnsurePlacementRoot();
+            TryResolveStreamTarget();
         }
 
         private void Update()
@@ -91,6 +93,7 @@ namespace InfiniteWorld.VoxelWorld
             EnsureRuntimeData();
             EnsureChunkRoot();
             EnsureRegionRoot();
+            EnsurePlacementRoot();
             if (!TryResolveStreamTarget())
             {
                 return;
@@ -128,6 +131,8 @@ namespace InfiniteWorld.VoxelWorld
 
             CleanupChunks();
             CleanupRegions();
+            CleanupPlacementPlans();
+            CleanupSpawnedPlacements();
             atlas?.Dispose();
             atlas = null;
         }
@@ -135,6 +140,7 @@ namespace InfiniteWorld.VoxelWorld
         private void EnsureRuntimeData()
         {
             settings = VoxelWorldResolvedSettings.Resolve(config);
+            ValidatePlacementCollectionsIfNeeded();
             int configuredBiomeCount = CountConfiguredBiomes();
 
             if (atlas != null && atlasBiomeCount == configuredBiomeCount)
@@ -373,6 +379,11 @@ namespace InfiniteWorld.VoxelWorld
                 MarkRegionDirty(coord);
                 PublishChunkNavGeometryRemoved(coord, runtime.Version);
                 chunks.Remove(coord);
+                lock (placementPlanLock)
+                {
+                    chunkPlacementPlans.Remove(coord);
+                }
+                DespawnChunkPlacements(coord);
                 runtime.Dispose();
                 TryDisposeRegionIfEmpty(regionCoord);
                 QueueNeighborRefresh(coord);
@@ -898,6 +909,8 @@ namespace InfiniteWorld.VoxelWorld
                 runtime.State = ChunkState.ReadyToRender;
             }
 
+            TrySpawnChunkPlacements(result.Coord);
+
             return true;
         }
 
@@ -984,6 +997,7 @@ namespace InfiniteWorld.VoxelWorld
             }
 
             chunks.Clear();
+            CleanupSpawnedPlacements();
             dirtyChunkMeshes.Clear();
             queuedChunkMeshes.Clear();
             pendingNeighborRefreshes.Clear();
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs b/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs
new file mode 100644
index 00000000..d501cee7
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs
@@ -0,0 +1,277 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace InfiniteWorld.VoxelWorld
+{
+    public enum WorldPlacementMode : byte
+    {
+        GroundOnly,
+        FlattenTerrain
+    }
+
+    [CreateAssetMenu(menuName = "Infinite World/World Prefab Collection", fileName = "WorldPrefabCollection")]
+    public sealed class WorldPrefabCollection : ScriptableObject
+    {
+        [Tooltip("Maximum number of spawn points this collection may contribute to a single chunk.")]
+        [Min(0)] public int maxPlacementsPerChunk = 2;
+        [Tooltip("How many deterministic candidate positions are tested for each spawn slot before it is skipped.")]
+        [Min(1)] public int attemptsPerPlacement = 8;
+        [Tooltip("How many cells near the chunk border are reserved so large prefabs do not clip outside the chunk.")]
+        [Min(0)] public int chunkEdgePadding = 1;
+        public List<WorldPrefabEntry> entries = new List<WorldPrefabEntry>();
+
+        public IReadOnlyList<WorldPrefabEntry> Entries => entries;
+    }
+
+    [Serializable]
+    public sealed class WorldPrefabEntry
+    {
+        [Tooltip("Stable logical identifier for this entry. Use it later for save data, analytics, or seeded config generation.")]
+        public string id = "entry";
+
+        [Tooltip("Prefab that will be instantiated when this entry wins placement generation.")]
+        public GameObject prefab;
+
+        [Tooltip("Relative weight inside the collection. Higher values make this entry more likely to be selected compared to others.")]
+        [Min(0f)] public float weight = 1f;
+
+        [Tooltip("Percent chance from 0 to 100 that the selected entry will actually spawn in its slot after being chosen by weight.")]
+        [Range(0f, 100f)] public float spawnChancePercent = 100f;
+
+        [Tooltip("GroundOnly requires an already flat area. FlattenTerrain carves the area to ground level and ensures an approach path.")]
+        public WorldPlacementMode placementMode;
+
+        [Tooltip("Required placement size in world cells. Rotations may swap X and Y if enabled.")]
+        public Vector2Int footprint = Vector2Int.one;
+
+        [Tooltip("Extra reserved cells around the footprint so other generated placements do not overlap too closely.")]
+        [Min(0)] public int clearance;
+
+        [Tooltip("Extra cells around the footprint that will also be flattened when using FlattenTerrain.")]
+        [Min(0)] public int flattenPadding = 1;
+
+        [Tooltip("Maximum search radius in cells for finding existing ground and cutting an access corridor to the flattened area.")]
+        [Min(1)] public int flattenSearchRadius = 6;
+
+        [Tooltip("Allows deterministic 90-degree rotations so the same prefab can fit in more layout variations.")]
+        public bool allowRotations = true;
+    }
+
+    internal sealed class WorldPrefabCollectionRuntime
+    {
+        public WorldPrefabCollectionRuntime(int sourceIndex, int maxPlacementsPerChunk, int attemptsPerPlacement, int chunkEdgePadding, IReadOnlyList<WorldPrefabEntryRuntime> entries)
+        {
+            SourceIndex = sourceIndex;
+            MaxPlacementsPerChunk = maxPlacementsPerChunk;
+            AttemptsPerPlacement = attemptsPerPlacement;
+            ChunkEdgePadding = chunkEdgePadding;
+            Entries = entries ?? Array.Empty<WorldPrefabEntryRuntime>();
+        }
+
+        public int SourceIndex { get; }
+        public int MaxPlacementsPerChunk { get; }
+        public int AttemptsPerPlacement { get; }
+        public int ChunkEdgePadding { get; }
+        public IReadOnlyList<WorldPrefabEntryRuntime> Entries { get; }
+    }
+
+    internal sealed class WorldPrefabEntryRuntime
+    {
+        public WorldPrefabEntryRuntime(int sourceIndex, string id, float weight, float spawnChancePercent, WorldPlacementMode placementMode, Vector2Int footprint, int clearance, int flattenPadding, int flattenSearchRadius, bool allowRotations, bool hasPrefab)
+        {
+            SourceIndex = sourceIndex;
+            Id = string.IsNullOrWhiteSpace(id) ? $"entry_{sourceIndex}" : id;
+            Weight = Mathf.Max(0f, weight);
+            SpawnChancePercent = Mathf.Clamp(spawnChancePercent, 0f, 100f);
+            PlacementMode = placementMode;
+            Footprint = new Vector2Int(Mathf.Max(1, footprint.x), Mathf.Max(1, footprint.y));
+            Clearance = Mathf.Max(0, clearance);
+            FlattenPadding = Mathf.Max(0, flattenPadding);
+            FlattenSearchRadius = Mathf.Max(1, flattenSearchRadius);
+            AllowRotations = allowRotations;
+            HasPrefab = hasPrefab;
+        }
+
+        public int SourceIndex { get; }
+        public string Id { get; }
+        public float Weight { get; }
+        public float SpawnChancePercent { get; }
+        public WorldPlacementMode PlacementMode { get; }
+        public Vector2Int Footprint { get; }
+        public int Clearance { get; }
+        public int FlattenPadding { get; }
+        public int FlattenSearchRadius { get; }
+        public bool AllowRotations { get; }
+        public bool HasPrefab { get; }
+    }
+
+    internal static class WorldPlacementValidation
+    {
+        public static bool TryGetCollectionBlockerReason(WorldPrefabCollection collection, out string reason)
+        {
+            if (collection == null)
+            {
+                reason = "collection reference is missing.";
+                return true;
+            }
+
+            if (collection.maxPlacementsPerChunk <= 0)
+            {
+                reason = "max placements per chunk must be greater than 0.";
+                return true;
+            }
+
+            if (collection.attemptsPerPlacement < 1)
+            {
+                reason = "attempts per placement must be at least 1.";
+                return true;
+            }
+
+            if (collection.chunkEdgePadding < 0)
+            {
+                reason = "chunk edge padding cannot be negative.";
+                return true;
+            }
+
+            if (collection.entries == null || collection.entries.Count == 0)
+            {
+                reason = "collection has no entries configured.";
+                return true;
+            }
+
+            reason = null;
+            return false;
+        }
+
+        public static bool TryGetEntryBlockerReason(WorldPrefabEntry entry, HashSet<string> usedIds, out string reason)
+        {
+            if (entry == null)
+            {
+                reason = "entry reference is missing.";
+                return true;
+            }
+
+            if (string.IsNullOrWhiteSpace(entry.id))
+            {
+                reason = "id is empty. A stable id is required for deterministic spawns and save data.";
+                return true;
+            }
+
+            if (usedIds != null && !usedIds.Add(entry.id))
+            {
+                reason = $"duplicate id '{entry.id}' in the same collection.";
+                return true;
+            }
+
+            if (entry.prefab == null)
+            {
+                reason = "prefab is missing.";
+                return true;
+            }
+
+            if (entry.weight <= 0f)
+            {
+                reason = "weight must be greater than 0.";
+                return true;
+            }
+
+            if (entry.spawnChancePercent <= 0f)
+            {
+                reason = "spawn chance must be greater than 0%.";
+                return true;
+            }
+
+            if (entry.footprint.x <= 0 || entry.footprint.y <= 0)
+            {
+                reason = "footprint must be at least 1x1.";
+                return true;
+            }
+
+            if (entry.clearance < 0)
+            {
+                reason = "clearance cannot be negative.";
+                return true;
+            }
+
+            if (entry.flattenPadding < 0)
+            {
+                reason = "flatten padding cannot be negative.";
+                return true;
+            }
+
+            if (entry.placementMode == WorldPlacementMode.FlattenTerrain && entry.flattenSearchRadius < 1)
+            {
+                reason = "flatten search radius must be at least 1 for FlattenTerrain mode.";
+                return true;
+            }
+
+            reason = null;
+            return false;
+        }
+    }
+
+    public sealed class WorldTerrainPatch
+    {
+        private readonly List<Vector2Int> flattenedCells;
+
+        public WorldTerrainPatch(IReadOnlyList<Vector2Int> cells)
+        {
+            flattenedCells = cells != null ? new List<Vector2Int>(cells) : new List<Vector2Int>();
+        }
+
+        public IReadOnlyList<Vector2Int> FlattenedCells => flattenedCells;
+    }
+
+    public readonly struct WorldSpawnPoint
+    {
+        public WorldSpawnPoint(long spawnId, Vector2Int chunkCoord, int spawnOrdinalInChunk, int collectionIndex, int entryIndex, string entryId, Vector3 position, Quaternion rotation)
+        {
+            SpawnId = spawnId;
+            ChunkCoord = chunkCoord;
+            SpawnOrdinalInChunk = spawnOrdinalInChunk;
+            CollectionIndex = collectionIndex;
+            EntryIndex = entryIndex;
+            EntryId = entryId;
+            Position = position;
+            Rotation = rotation;
+        }
+
+        public long SpawnId { get; }
+        public Vector2Int ChunkCoord { get; }
+        public int SpawnOrdinalInChunk { get; }
+        public int CollectionIndex { get; }
+        public int EntryIndex { get; }
+        public string EntryId { get; }
+        public Vector3 Position { get; }
+        public Quaternion Rotation { get; }
+    }
+
+    public sealed class WorldChunkPlacementPlan
+    {
+        private static readonly IReadOnlyList<WorldSpawnPoint> EmptySpawnPoints = Array.Empty<WorldSpawnPoint>();
+        private static readonly IReadOnlyList<WorldTerrainPatch> EmptyTerrainPatches = Array.Empty<WorldTerrainPatch>();
+
+        private readonly IReadOnlyList<WorldSpawnPoint> spawnPoints;
+        private readonly IReadOnlyList<WorldTerrainPatch> terrainPatches;
+        private readonly HashSet<Vector2Int> flattenedCells;
+
+        public static WorldChunkPlacementPlan Empty { get; } = new WorldChunkPlacementPlan(EmptySpawnPoints, EmptyTerrainPatches, null);
+
+        public WorldChunkPlacementPlan(IReadOnlyList<WorldSpawnPoint> spawnPoints, IReadOnlyList<WorldTerrainPatch> terrainPatches, HashSet<Vector2Int> flattenedCells)
+        {
+            this.spawnPoints = spawnPoints ?? EmptySpawnPoints;
+            this.terrainPatches = terrainPatches ?? EmptyTerrainPatches;
+            this.flattenedCells = flattenedCells;
+        }
+
+        public IReadOnlyList<WorldSpawnPoint> SpawnPoints => spawnPoints;
+        public IReadOnlyList<WorldTerrainPatch> TerrainPatches => terrainPatches;
+        public bool HasFlattening => flattenedCells != null && flattenedCells.Count > 0;
+
+        public int GetFinalHeight(Vector2Int worldCell, int baseHeight)
+        {
+            return flattenedCells != null && flattenedCells.Contains(worldCell) ? 0 : baseHeight;
+        }
+    }
+}
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs.meta b/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs.meta
new file mode 100644
index 00000000..ebc37c25
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldPrefabCollection.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 0f36445faa7413742b67196646eb2631
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs b/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs
new file mode 100644
index 00000000..18269622
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs
@@ -0,0 +1,39 @@
+namespace InfiniteWorld.VoxelWorld
+{
+    internal static class WorldSeedUtility
+    {
+        public static uint Hash(params int[] values)
+        {
+            uint hash = 2166136261u;
+            for (int i = 0; i < values.Length; i++)
+            {
+                hash ^= unchecked((uint)values[i]);
+                hash *= 16777619u;
+                hash ^= hash >> 13;
+                hash *= 1274126177u;
+            }
+
+            return hash;
+        }
+
+        public static float Value01(uint hash)
+        {
+            return (hash & 0x00FFFFFFu) / 16777215f;
+        }
+
+        public static int Range(uint hash, int minInclusive, int maxExclusive)
+        {
+            if (maxExclusive <= minInclusive)
+            {
+                return minInclusive;
+            }
+
+            return minInclusive + (int)(hash % (uint)(maxExclusive - minInclusive));
+        }
+
+        public static long ToStableId(uint hashA, uint hashB)
+        {
+            return ((long)hashA << 32) | hashB;
+        }
+    }
+}
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs.meta b/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs.meta
new file mode 100644
index 00000000..1d968364
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldSeedUtility.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 24b3661eb20e8b44a96a4f8cdf49e466
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs b/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs
new file mode 100644
index 00000000..36622a8b
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs
@@ -0,0 +1,489 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace InfiniteWorld.VoxelWorld
+{
+    internal static class WorldSpawnPlanner
+    {
+        public static WorldChunkPlacementPlan PlanChunk(
+            int worldSeed,
+            Vector2Int chunkCoord,
+            int chunkSize,
+            IReadOnlyList<WorldPrefabCollectionRuntime> collections,
+            System.Func<Vector2Int, int> getBaseHeight)
+        {
+            if (collections == null || collections.Count == 0)
+            {
+                return WorldChunkPlacementPlan.Empty;
+            }
+
+            List<WorldSpawnPoint> spawnPoints = new List<WorldSpawnPoint>();
+            List<WorldTerrainPatch> terrainPatches = new List<WorldTerrainPatch>();
+            HashSet<Vector2Int> flattenedCells = new HashSet<Vector2Int>();
+            HashSet<Vector2Int> occupiedCells = new HashSet<Vector2Int>();
+            int spawnOrdinal = 0;
+
+            for (int collectionIndex = 0; collectionIndex < collections.Count; collectionIndex++)
+            {
+                WorldPrefabCollectionRuntime collection = collections[collectionIndex];
+                if (collection == null || collection.Entries == null || collection.Entries.Count == 0 || collection.MaxPlacementsPerChunk <= 0)
+                {
+                    continue;
+                }
+
+                for (int placementIndex = 0; placementIndex < collection.MaxPlacementsPerChunk; placementIndex++)
+                {
+                    if (!TryPickEntry(collection, worldSeed, chunkCoord, collectionIndex, placementIndex, out int entryIndex, out WorldPrefabEntryRuntime entry))
+                    {
+                        continue;
+                    }
+
+                    if (!PassesSpawnChance(entry, worldSeed, chunkCoord, collectionIndex, placementIndex))
+                    {
+                        continue;
+                    }
+
+                    if (!TryPlanPlacement(worldSeed, chunkCoord, chunkSize, collection, collectionIndex, placementIndex, entryIndex, entry, spawnOrdinal, occupiedCells, flattenedCells, getBaseHeight, out WorldSpawnPoint spawnPoint, out WorldTerrainPatch patch, out List<Vector2Int> reservedCells))
+                    {
+                        continue;
+                    }
+
+                    spawnPoints.Add(spawnPoint);
+                    if (patch != null)
+                    {
+                        terrainPatches.Add(patch);
+                    }
+
+                    for (int i = 0; i < reservedCells.Count; i++)
+                    {
+                        occupiedCells.Add(reservedCells[i]);
+                    }
+
+                    spawnOrdinal++;
+                }
+            }
+
+            if (spawnPoints.Count == 0 && terrainPatches.Count == 0)
+            {
+                return WorldChunkPlacementPlan.Empty;
+            }
+
+            return new WorldChunkPlacementPlan(spawnPoints, terrainPatches, flattenedCells.Count > 0 ? flattenedCells : null);
+        }
+
+        private static bool TryPickEntry(WorldPrefabCollectionRuntime collection, int worldSeed, Vector2Int chunkCoord, int collectionIndex, int placementIndex, out int entryIndex, out WorldPrefabEntryRuntime entry)
+        {
+            float totalWeight = 0f;
+            for (int i = 0; i < collection.Entries.Count; i++)
+            {
+                WorldPrefabEntryRuntime candidate = collection.Entries[i];
+                if (candidate == null || !candidate.HasPrefab || candidate.Weight <= 0f)
+                {
+                    continue;
+                }
+
+                totalWeight += candidate.Weight;
+            }
+
+            if (totalWeight <= 0f)
+            {
+                entryIndex = -1;
+                entry = null;
+                return false;
+            }
+
+            float pick = WorldSeedUtility.Value01(WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex, placementIndex, 1)) * totalWeight;
+            float accumulated = 0f;
+            for (int i = 0; i < collection.Entries.Count; i++)
+            {
+                WorldPrefabEntryRuntime candidate = collection.Entries[i];
+                if (candidate == null || !candidate.HasPrefab || candidate.Weight <= 0f)
+                {
+                    continue;
+                }
+
+                accumulated += candidate.Weight;
+                if (pick <= accumulated)
+                {
+                    entryIndex = i;
+                    entry = candidate;
+                    return true;
+                }
+            }
+
+            for (int i = collection.Entries.Count - 1; i >= 0; i--)
+            {
+                WorldPrefabEntryRuntime candidate = collection.Entries[i];
+                if (candidate == null || !candidate.HasPrefab || candidate.Weight <= 0f)
+                {
+                    continue;
+                }
+
+                entryIndex = i;
+                entry = candidate;
+                return true;
+            }
+
+            entryIndex = -1;
+            entry = null;
+            return false;
+        }
+
+        private static bool PassesSpawnChance(WorldPrefabEntryRuntime entry, int worldSeed, Vector2Int chunkCoord, int collectionIndex, int placementIndex)
+        {
+            if (entry == null)
+            {
+                return false;
+            }
+
+            if (entry.SpawnChancePercent <= 0f)
+            {
+                return false;
+            }
+
+            if (entry.SpawnChancePercent >= 100f)
+            {
+                return true;
+            }
+
+            float roll = WorldSeedUtility.Value01(WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex, placementIndex, 11)) * 100f;
+            return roll <= entry.SpawnChancePercent;
+        }
+
+        private static bool TryPlanPlacement(
+            int worldSeed,
+            Vector2Int chunkCoord,
+            int chunkSize,
+            WorldPrefabCollectionRuntime collection,
+            int collectionIndex,
+            int placementIndex,
+            int entryIndex,
+            WorldPrefabEntryRuntime entry,
+            int spawnOrdinal,
+            HashSet<Vector2Int> occupiedCells,
+            HashSet<Vector2Int> flattenedCells,
+            System.Func<Vector2Int, int> getBaseHeight,
+            out WorldSpawnPoint spawnPoint,
+            out WorldTerrainPatch patch,
+            out List<Vector2Int> reservedCells)
+        {
+            reservedCells = null;
+            spawnPoint = default;
+            patch = null;
+
+            Vector2Int chunkOrigin = new Vector2Int(chunkCoord.x * chunkSize, chunkCoord.y * chunkSize);
+            int attempts = Mathf.Max(1, collection.AttemptsPerPlacement);
+            for (int attempt = 0; attempt < attempts; attempt++)
+            {
+                int rotationSteps = entry.AllowRotations ? WorldSeedUtility.Range(WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex, placementIndex, attempt, 2), 0, 4) : 0;
+                Vector2Int footprint = GetFootprint(entry.Footprint, rotationSteps);
+                if (footprint.x <= 0 || footprint.y <= 0)
+                {
+                    continue;
+                }
+
+                int localMinX = collection.ChunkEdgePadding;
+                int localMinZ = collection.ChunkEdgePadding;
+                int localMaxX = chunkSize - collection.ChunkEdgePadding - footprint.x;
+                int localMaxZ = chunkSize - collection.ChunkEdgePadding - footprint.y;
+                if (localMaxX < localMinX || localMaxZ < localMinZ)
+                {
+                    continue;
+                }
+
+                int localX = WorldSeedUtility.Range(WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex, placementIndex, attempt, 3), localMinX, localMaxX + 1);
+                int localZ = WorldSeedUtility.Range(WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex, placementIndex, attempt, 4), localMinZ, localMaxZ + 1);
+                RectInt footprintRect = new RectInt(localX, localZ, footprint.x, footprint.y);
+                RectInt reservedRect = ExpandRect(footprintRect, Mathf.Max(0, entry.Clearance), chunkSize);
+
+                if (IntersectsOccupied(chunkOrigin, reservedRect, occupiedCells))
+                {
+                    continue;
+                }
+
+                if (entry.PlacementMode == WorldPlacementMode.GroundOnly)
+                {
+                    if (!IsGroundArea(chunkOrigin, reservedRect, flattenedCells, getBaseHeight))
+                    {
+                        continue;
+                    }
+
+                    reservedCells = CollectCells(chunkOrigin, reservedRect);
+                }
+                else
+                {
+                    if (!TryCreateFlattenPatch(chunkOrigin, chunkSize, footprintRect, reservedRect, entry, occupiedCells, flattenedCells, getBaseHeight, out patch, out reservedCells))
+                    {
+                        patch = null;
+                        continue;
+                    }
+                }
+
+                float rotationY = rotationSteps * 90f;
+                Vector3 position = new Vector3(
+                    chunkOrigin.x + footprintRect.x + footprintRect.width * 0.5f,
+                    0f,
+                    chunkOrigin.y + footprintRect.y + footprintRect.height * 0.5f);
+                long spawnId = WorldSeedUtility.ToStableId(
+                    WorldSeedUtility.Hash(worldSeed, chunkCoord.x, chunkCoord.y, collectionIndex),
+                    WorldSeedUtility.Hash(entryIndex, placementIndex, spawnOrdinal, footprintRect.x, footprintRect.y));
+                spawnPoint = new WorldSpawnPoint(spawnId, chunkCoord, spawnOrdinal, collectionIndex, entryIndex, entry.Id, position, Quaternion.Euler(0f, rotationY, 0f));
+                return true;
+            }
+
+            return false;
+        }
+
+        private static bool TryCreateFlattenPatch(
+            Vector2Int chunkOrigin,
+            int chunkSize,
+            RectInt footprintRect,
+            RectInt reservedRect,
+            WorldPrefabEntryRuntime entry,
+            HashSet<Vector2Int> occupiedCells,
+            HashSet<Vector2Int> flattenedCells,
+            System.Func<Vector2Int, int> getBaseHeight,
+            out WorldTerrainPatch patch,
+            out List<Vector2Int> reservedCells)
+        {
+            int flattenPadding = Mathf.Max(entry.Clearance, entry.FlattenPadding);
+            RectInt flattenRect = ExpandRect(footprintRect, flattenPadding, chunkSize);
+            List<Vector2Int> flattened = CollectCells(chunkOrigin, flattenRect);
+            if (IntersectsOccupied(flattened, occupiedCells))
+            {
+                patch = null;
+                reservedCells = null;
+                return false;
+            }
+
+            List<Vector2Int> corridor = TryBuildAccessCorridor(chunkOrigin, chunkSize, flattenRect, Mathf.Max(1, entry.FlattenSearchRadius), occupiedCells, flattenedCells, getBaseHeight);
+            if (corridor == null)
+            {
+                patch = null;
+                reservedCells = null;
+                return false;
+            }
+
+            for (int i = 0; i < corridor.Count; i++)
+            {
+                flattened.Add(corridor[i]);
+            }
+
+            HashSet<Vector2Int> uniqueFlattened = new HashSet<Vector2Int>(flattened);
+            foreach (Vector2Int worldCell in uniqueFlattened)
+            {
+                flattenedCells.Add(worldCell);
+            }
+
+            patch = new WorldTerrainPatch(flattened);
+            reservedCells = CollectCells(chunkOrigin, reservedRect);
+            reservedCells.AddRange(corridor);
+            return true;
+        }
+
+        private static List<Vector2Int> TryBuildAccessCorridor(
+            Vector2Int chunkOrigin,
+            int chunkSize,
+            RectInt flattenRect,
+            int searchRadius,
+            HashSet<Vector2Int> occupiedCells,
+            HashSet<Vector2Int> flattenedCells,
+            System.Func<Vector2Int, int> getBaseHeight)
+        {
+            if (HasAccessibleGroundNeighbor(chunkOrigin, flattenRect, flattenedCells, getBaseHeight))
+            {
+                return new List<Vector2Int>();
+            }
+
+            Vector2Int center = new Vector2Int(flattenRect.x + flattenRect.width / 2, flattenRect.y + flattenRect.height / 2);
+            Vector2Int? target = FindNearestGroundCell(chunkOrigin, chunkSize, center, flattenRect, searchRadius, occupiedCells, flattenedCells, getBaseHeight);
+            if (!target.HasValue)
+            {
+                return null;
+            }
+
+            Vector2Int entryCell = new Vector2Int(
+                Mathf.Clamp(target.Value.x, chunkOrigin.x + flattenRect.xMin, chunkOrigin.x + flattenRect.xMax - 1),
+                Mathf.Clamp(target.Value.y, chunkOrigin.y + flattenRect.yMin, chunkOrigin.y + flattenRect.yMax - 1));
+
+            List<Vector2Int> corridor = new List<Vector2Int>();
+            Vector2Int cursor = target.Value;
+            while (cursor.x != entryCell.x)
+            {
+                if (!occupiedCells.Contains(cursor))
+                {
+                    corridor.Add(cursor);
+                }
+
+                cursor.x += cursor.x < entryCell.x ? 1 : -1;
+            }
+
+            while (cursor.y != entryCell.y)
+            {
+                if (!occupiedCells.Contains(cursor))
+                {
+                    corridor.Add(cursor);
+                }
+
+                cursor.y += cursor.y < entryCell.y ? 1 : -1;
+            }
+
+            return corridor;
+        }
+
+        private static bool HasAccessibleGroundNeighbor(Vector2Int chunkOrigin, RectInt flattenRect, HashSet<Vector2Int> flattenedCells, System.Func<Vector2Int, int> getBaseHeight)
+        {
+            for (int z = flattenRect.yMin - 1; z <= flattenRect.yMax; z++)
+            {
+                Vector2Int left = new Vector2Int(chunkOrigin.x + flattenRect.xMin - 1, chunkOrigin.y + z);
+                Vector2Int right = new Vector2Int(chunkOrigin.x + flattenRect.xMax, chunkOrigin.y + z);
+                if (GetPlannedHeight(left, flattenedCells, getBaseHeight) == 0 || GetPlannedHeight(right, flattenedCells, getBaseHeight) == 0)
+                {
+                    return true;
+                }
+            }
+
+            for (int x = flattenRect.xMin; x < flattenRect.xMax; x++)
+            {
+                Vector2Int bottom = new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + flattenRect.yMin - 1);
+                Vector2Int top = new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + flattenRect.yMax);
+                if (GetPlannedHeight(bottom, flattenedCells, getBaseHeight) == 0 || GetPlannedHeight(top, flattenedCells, getBaseHeight) == 0)
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        private static Vector2Int? FindNearestGroundCell(
+            Vector2Int chunkOrigin,
+            int chunkSize,
+            Vector2Int localCenter,
+            RectInt excludedRect,
+            int searchRadius,
+            HashSet<Vector2Int> occupiedCells,
+            HashSet<Vector2Int> flattenedCells,
+            System.Func<Vector2Int, int> getBaseHeight)
+        {
+            for (int radius = 1; radius <= searchRadius; radius++)
+            {
+                for (int dz = -radius; dz <= radius; dz++)
+                {
+                    for (int dx = -radius; dx <= radius; dx++)
+                    {
+                        if (Mathf.Max(Mathf.Abs(dx), Mathf.Abs(dz)) != radius)
+                        {
+                            continue;
+                        }
+
+                        int localX = localCenter.x + dx;
+                        int localZ = localCenter.y + dz;
+                        if (localX < 0 || localZ < 0 || localX >= chunkSize || localZ >= chunkSize)
+                        {
+                            continue;
+                        }
+
+                        if (excludedRect.Contains(new Vector2Int(localX, localZ)))
+                        {
+                            continue;
+                        }
+
+                        Vector2Int worldCell = new Vector2Int(chunkOrigin.x + localX, chunkOrigin.y + localZ);
+                        if (occupiedCells.Contains(worldCell))
+                        {
+                            continue;
+                        }
+
+                        if (GetPlannedHeight(worldCell, flattenedCells, getBaseHeight) == 0)
+                        {
+                            return worldCell;
+                        }
+                    }
+                }
+            }
+
+            return null;
+        }
+
+        private static int GetPlannedHeight(Vector2Int worldCell, HashSet<Vector2Int> flattenedCells, System.Func<Vector2Int, int> getBaseHeight)
+        {
+            return flattenedCells.Contains(worldCell) ? 0 : getBaseHeight(worldCell);
+        }
+
+        private static bool IsGroundArea(Vector2Int chunkOrigin, RectInt rect, HashSet<Vector2Int> flattenedCells, System.Func<Vector2Int, int> getBaseHeight)
+        {
+            for (int z = rect.yMin; z < rect.yMax; z++)
+            {
+                for (int x = rect.xMin; x < rect.xMax; x++)
+                {
+                    if (GetPlannedHeight(new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + z), flattenedCells, getBaseHeight) > 0)
+                    {
+                        return false;
+                    }
+                }
+            }
+
+            return true;
+        }
+
+        private static bool IntersectsOccupied(Vector2Int chunkOrigin, RectInt rect, HashSet<Vector2Int> occupiedCells)
+        {
+            for (int z = rect.yMin; z < rect.yMax; z++)
+            {
+                for (int x = rect.xMin; x < rect.xMax; x++)
+                {
+                    if (occupiedCells.Contains(new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + z)))
+                    {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        private static bool IntersectsOccupied(List<Vector2Int> cells, HashSet<Vector2Int> occupiedCells)
+        {
+            for (int i = 0; i < cells.Count; i++)
+            {
+                if (occupiedCells.Contains(cells[i]))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        private static List<Vector2Int> CollectCells(Vector2Int chunkOrigin, RectInt rect)
+        {
+            List<Vector2Int> result = new List<Vector2Int>(rect.width * rect.height);
+            for (int z = rect.yMin; z < rect.yMax; z++)
+            {
+                for (int x = rect.xMin; x < rect.xMax; x++)
+                {
+                    result.Add(new Vector2Int(chunkOrigin.x + x, chunkOrigin.y + z));
+                }
+            }
+
+            return result;
+        }
+
+        private static RectInt ExpandRect(RectInt rect, int amount, int chunkSize)
+        {
+            return new RectInt(
+                Mathf.Max(0, rect.xMin - amount),
+                Mathf.Max(0, rect.yMin - amount),
+                Mathf.Min(chunkSize, rect.xMax + amount) - Mathf.Max(0, rect.xMin - amount),
+                Mathf.Min(chunkSize, rect.yMax + amount) - Mathf.Max(0, rect.yMin - amount));
+        }
+
+        private static Vector2Int GetFootprint(Vector2Int footprint, int rotationSteps)
+        {
+            footprint.x = Mathf.Max(1, footprint.x);
+            footprint.y = Mathf.Max(1, footprint.y);
+            return rotationSteps % 2 == 0 ? footprint : new Vector2Int(footprint.y, footprint.x);
+        }
+    }
+}
diff --git a/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs.meta b/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs.meta
new file mode 100644
index 00000000..f67da9a3
--- /dev/null
+++ b/Assets/Features/VoxelWorld/Runtime/WorldSpawnPlanner.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: c0ff8828be489ea4b8cef4f1f62b3a14
\ No newline at end of file
diff --git a/Assets/Features/VoxelWorld/Scenes/VoxelWorldTestScene.unity b/Assets/Features/VoxelWorld/Scenes/VoxelWorldTestScene.unity
index 0f400d8f..f8bd540e 100644
--- a/Assets/Features/VoxelWorld/Scenes/VoxelWorldTestScene.unity
+++ b/Assets/Features/VoxelWorld/Scenes/VoxelWorldTestScene.unity
@@ -408,6 +408,14 @@ PrefabInstance:
       propertyPath: streamTarget
       value: 
       objectReference: {fileID: 0}
+    - target: {fileID: 2927522923773808063, guid: 91b5caa5457131b4f8c542529f4ad7c3, type: 3}
+      propertyPath: placementCollections.Array.size
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 2927522923773808063, guid: 91b5caa5457131b4f8c542529f4ad7c3, type: 3}
+      propertyPath: 'placementCollections.Array.data[0]'
+      value: 
+      objectReference: {fileID: 11400000, guid: b91d23f483c774f4dbb1a77660881d87, type: 2}
     m_RemovedComponents: []
     m_RemovedGameObjects: []
     m_AddedGameObjects: []
diff --git a/Assets/Scripts/Players/PlayerMoving.cs b/Assets/Scripts/Players/PlayerMoving.cs
index 5e59a7d2..df6149aa 100644
--- a/Assets/Scripts/Players/PlayerMoving.cs
+++ b/Assets/Scripts/Players/PlayerMoving.cs
@@ -1,12 +1,18 @@
 using FishNet.Object;
 using UnityEngine;
+using UnityEngine.InputSystem;
 
 namespace Players
 {
     public sealed class PlayerMoving : NetworkBehaviour
     {
         [SerializeField] private float _moveSpeed = 5f;
+        [SerializeField] private float _sprintMultiplier = 2f;
+        [SerializeField] private float _slowMultiplier = 0.5f;
         [SerializeField] private CharacterController _characterController;
+        [SerializeField] private InputActionReference _moveAction;
+        [SerializeField] private InputActionReference _sprintAction;
+        [SerializeField] private InputActionReference _slowAction;
 
         private Transform _cameraTransform;
 
@@ -16,22 +22,72 @@ namespace Players
             if (playerCamera != null)
                 _cameraTransform = playerCamera.transform;
         }
+
+        private void OnEnable()
+        {
+            EnableAction(_moveAction);
+            EnableAction(_sprintAction);
+            EnableAction(_slowAction);
+        }
+
+        private void OnDisable()
+        {
+            DisableAction(_moveAction);
+            DisableAction(_sprintAction);
+            DisableAction(_slowAction);
+        }
         
         private void Update()
         {
             if (!IsOwner)
                 return;
-            
-            float horizontal = Input.GetAxisRaw("Horizontal");
-            float vertical = Input.GetAxisRaw("Vertical");
+
+            Vector2 moveInput = ReadMoveInput();
+            float speedMultiplier = ReadSpeedMultiplier();
 
             Transform directionSource = _cameraTransform != null ? _cameraTransform : transform;
             Vector3 forward = Vector3.ProjectOnPlane(directionSource.forward, Vector3.up).normalized;
             Vector3 right = Vector3.ProjectOnPlane(directionSource.right, Vector3.up).normalized;
-            Vector3 moveDirection = (right * horizontal + forward * vertical).normalized;
-            Vector3 offset = moveDirection * (_moveSpeed * Time.deltaTime);
+            Vector3 moveDirection = (right * moveInput.x + forward * moveInput.y).normalized;
+            Vector3 offset = moveDirection * (_moveSpeed * speedMultiplier * Time.deltaTime);
 
             _characterController.Move(offset);
         }
+
+        private Vector2 ReadMoveInput()
+        {
+            InputAction action = _moveAction != null ? _moveAction.action : null;
+            return action != null ? action.ReadValue<Vector2>() : Vector2.zero;
+        }
+
+        private float ReadSpeedMultiplier()
+        {
+            bool isSprinting = IsActionPressed(_sprintAction);
+            bool isSlowing = IsActionPressed(_slowAction);
+            if (isSprinting == isSlowing)
+                return 1f;
+
+            return isSprinting ? _sprintMultiplier : _slowMultiplier;
+        }
+
+        private static bool IsActionPressed(InputActionReference actionReference)
+        {
+            InputAction action = actionReference != null ? actionReference.action : null;
+            return action != null && action.IsPressed();
+        }
+
+        private static void EnableAction(InputActionReference actionReference)
+        {
+            InputAction action = actionReference != null ? actionReference.action : null;
+            if (action != null && !action.enabled)
+                action.Enable();
+        }
+
+        private static void DisableAction(InputActionReference actionReference)
+        {
+            InputAction action = actionReference != null ? actionReference.action : null;
+            if (action != null && action.enabled)
+                action.Disable();
+        }
     }
 }
diff --git a/docs/tasks/Index.md b/docs/tasks/Index.md
index 74212446..8f5c7b3d 100644
--- a/docs/tasks/Index.md
+++ b/docs/tasks/Index.md
@@ -58,11 +58,13 @@
 | TASK-0016 | ToDo | High | classes | unassigned | 1d | docs/tasks/items/TASK-0016.md | Реализовать MVP-скилл Лучника: выстрел через общую систему оружия и навыков. |
 | TASK-0017 | BackLog | Medium | networking | unassigned | 1d | docs/tasks/items/TASK-0017.md | Добавить reconnect/resume после дисконнекта с восстановлением позиции и session state. |
 | TASK-0018 | BackLog | Medium | persistence | unassigned | 1d | docs/tasks/items/TASK-0018.md | Добавить миграции формата сохранений между версиями для world save и player save. |
-| TASK-0019 | BackLog | High | worldgen | unassigned | 1d6h | docs/tasks/items/TASK-0019.md | Добавить детерминированное размещение dungeon prefab в voxel-мире через stamp/carve в данных чанков. |
+| TASK-0019 | InProgress | High | worldgen | pretty_kotik | 1d6h | `docs/tasks/items/TASK-0019.md` | Добавить детерминированное размещение dungeon prefab в voxel-мире через stamp/carve в данных чанков. |
 | TASK-0020 | BackLog | High | security | unassigned | 1d | docs/tasks/items/TASK-0020.md | Добавить серверные ограничения и валидации против читов и некорректных клиентских команд. |
 | TASK-0021 | ToDo | High | architecture | unassigned | 2d | docs/tasks/items/TASK-0021.md | Привести проект в порядок: разнести код по asmdef, навести структуру Editor/Runtime и добавить базовые автотесты. |
 | TASK-0022 | ToDo | Highest | worldgen | unassigned | 1d | docs/tasks/items/TASK-0022.md | Интегрировать спавн врагов в VoxelWorldGenerator: спавнить по загрузке чанка и учитывать kill-state. |
 | TASK-0023 | InProgress | Highest | ai | abysscion | 2d | `docs/tasks/items/TASK-0023.md` | Реализовать runtime NavMesh bake для voxel-чанка и интегрировать обновление навигации при загрузке/изменении чанков. |
 | TASK-0024 | ToDo | Highest | art | unassigned | 2d | docs/tasks/items/TASK-0024.md | Заменить Minecraft-placeholder арт на легальные ассеты для продакшена и зафиксировать источник/лицензии. |
+| TASK-0025 | ToDo | Highest | build | unassigned | 1d | docs/tasks/items/TASK-0025.md | Описать и зафиксировать flow локального теста билда: сборка, запуск, host/client сценарий и обязательный smoke checklist. |
+| TASK-0026 | BackLog | High | ui | unassigned | 2d | docs/tasks/items/TASK-0026.md | Реализовать миникарту и механизм сохранения открытой карты у хоста так, чтобы состояние миникарты было общим для всех игроков мира. |
 | TASK-0027 | ToDo | Highest | gameplay-core | unassigned | 3d | docs/tasks/items/TASK-0027.md | Перевести player movement на host-authoritative NavMesh pipeline с server-side path planning и shared debug path preview для всех клиентов. |
 | TASK-0028 | ToDo | Highest | ai | unassigned | 2d | docs/tasks/items/TASK-0028.md | Перевести основной runtime pathing mode на interest-cluster-based coverage windows, чтобы убрать seam-разрывы region-based NavMesh и учитывать multiplayer interest set. |
diff --git a/docs/tasks/items/TASK-0019.md b/docs/tasks/items/TASK-0019.md
index 0ff06b8f..e7bff733 100644
--- a/docs/tasks/items/TASK-0019.md
+++ b/docs/tasks/items/TASK-0019.md
@@ -4,7 +4,7 @@ title: Добавить генерацию данжей-предфабов по
 summary: Реализовать BackLog-задачу на детерминированное размещение dungeon prefab в voxel-мире: одинаковая позиция по seed, встраивание через stamp/carve и сохранение результата.
 priority: High
 area: worldgen
-owner: unassigned
+owner: pretty_kotik
 created: 2026-03-30
 updated: 2026-03-30
 execution_time: 1d6h
diff --git a/docs/tasks/items/TASK-0025.md b/docs/tasks/items/TASK-0025.md
new file mode 100644
index 00000000..14d812d8
--- /dev/null
+++ b/docs/tasks/items/TASK-0025.md
@@ -0,0 +1,99 @@
+---
+id: TASK-0025
+title: Описать flow локального теста билда
+summary: Зафиксировать repeatable flow локального теста билда: как собрать проект, как запускать host/client сценарий и что обязательно проверять перед ручным прогоном.
+priority: Highest
+area: build
+owner: unassigned
+created: 2026-03-31
+updated: 2026-03-31
+execution_time: 1d
+depends_on: []
+canonical_docs:
+  - docs/tasks/Index.md
+related_files:
+  - ProjectSettings/
+  - Assets/Scenes/
+---
+
+# TASK-0025 - Описать flow локального теста билда
+
+## Status
+
+Статус задачи ведется в `docs/tasks/Index.md` и является каноническим там.
+
+## Why
+
+Без зафиксированного локального flow билд-тестов сложно быстро и одинаково проверять игру перед изменениями, особенно когда проект одновременно развивается в networking, voxel worldgen и gameplay.
+
+## Expected Outcome
+
+Есть понятный и повторяемый локальный сценарий проверки билда: как собрать проект, как запустить игру, как проверить host/client сценарий и какие smoke-checks обязательны перед ручным завершением теста.
+
+## Current Context
+
+Сейчас локальная проверка билда не оформлена как канонический процесс. Из-за этого каждый новый прогон легко делается по-разному и важные регрессии можно пропустить.
+
+## Source Of Truth
+
+- `ProjectSettings/...`
+- фактический build pipeline проекта
+- актуальные игровые сцены и точка входа в игру
+
+## Read First
+
+- `README.md`
+- `docs/tasks/Index.md`
+- `ProjectSettings/...`
+- `Assets/Scenes/...`
+
+## Scope In
+
+- описать локальную сборку проекта для основного target
+- зафиксировать host/client сценарий локального прогона
+- описать smoke checklist после запуска билда
+- указать, какие артефакты или логи нужно смотреть при сбое
+
+## Scope Out
+
+- автоматизация CI/CD
+- полное end-to-end покрытие всех игровых сценариев
+
+## Constraints
+
+- flow должен быть достаточно коротким для частого повторения
+- шаги должны быть воспроизводимыми на одной машине разработчика
+
+## Suggested Approach
+
+1. Зафиксировать основной build target и точку входа.
+2. Описать последовательность сборки и запуска host/client локально.
+3. Сформировать короткий smoke checklist.
+4. Добавить заметки по типовым ошибкам и логам.
+
+## Acceptance Criteria
+
+- есть документированный flow локального теста билда
+- есть checklist для host/client smoke test
+- новый человек или AI может повторить прогон без уточнений в чате
+
+## Verification
+
+- пройти описанный flow вручную
+- убедиться, что шаги не зависят от скрытых предположений
+
+## Risks / Open Questions
+
+- если build flow сильно зависит от окружения, понадобится отдельно фиксировать prerequisites
+
+## Human Decisions Needed
+
+- none currently
+
+## Decision Log
+
+- `2026-03-31` - задача добавлена для стандартизации ручной локальной проверки билда.
+
+## Handoff Notes
+
+Если в проекте появится отдельный build script или launcher, этот task нужно обновить и сослаться уже на него как на канонический entry point.
diff --git a/docs/tasks/items/TASK-0026.md b/docs/tasks/items/TASK-0026.md
new file mode 100644
index 00000000..916fb10c
--- /dev/null
+++ b/docs/tasks/items/TASK-0026.md
@@ -0,0 +1,101 @@
+---
+id: TASK-0026
+title: Реализовать миникарту и сохранение карты у хоста
+summary: Добавить миникарту и хранить ее открытое состояние у хоста так, чтобы карта была общей для всех игроков мира и сохранялась вместе с world-state.
+priority: High
+area: ui
+owner: unassigned
+created: 2026-03-31
+updated: 2026-03-31
+execution_time: 2d
+depends_on:
+  - TASK-0003
+  - TASK-0004
+canonical_docs:
+  - docs/tasks/Index.md
+related_files:
+  - Assets/Scripts/VoxelWorld/Runtime/VoxelWorldGenerator.cs
+  - Assets/Scenes/
+---
+
+# TASK-0026 - Реализовать миникарту и сохранение карты у хоста
+
+## Status
+
+Статус задачи ведется в `docs/tasks/Index.md` и является каноническим там.
+
+## Why
+
+Миникарта нужна как gameplay и navigation feature, но ее состояние не должно жить только локально у клиента. Хост должен быть источником истины для открытой карты мира, чтобы все игроки видели согласованное состояние.
+
+## Expected Outcome
+
+В игре есть миникарта, а открытые области карты сохраняются в состоянии мира у хоста и корректно восстанавливаются для всех игроков при повторном входе в мир.
+
+## Current Context
+
+Воксельный мир уже генерируется чанками, а world persistence выделен в отдельные задачи. Миникарта должна опираться на те же координаты чанков и храниться как часть world-state, а не как чисто локальный UI cache.
+
+## Source Of Truth
+
+- `docs/tasks/items/TASK-0003.md`
+- `docs/tasks/items/TASK-0004.md`
+- runtime реализация minimap и world save
+
+## Read First
+
+- `docs/tasks/items/TASK-0003.md`
+- `docs/tasks/items/TASK-0004.md`
+- `Assets/Scripts/VoxelWorld/Runtime/VoxelWorldGenerator.cs`
+
+## Scope In
+
+- базовое UI отображение миникарты
+- определение, какие области карты считаются открытыми
+- host-authoritative хранение открытой карты мира
+- восстановление состояния миникарты для всех игроков
+
+## Scope Out
+
+- полнофункциональная world map с маркерами, пингами и пользовательскими заметками
+- сложная система fog-of-war по каждому игроку отдельно
+
+## Constraints
+
+- источник истины по открытой карте у хоста
+- состояние карты должно быть частью world-state, а не только локального клиента
+- решение должно быть совместимо с chunked voxel world
+
+## Suggested Approach
+
+1. Определить формат minimap data на уровне чанков/областей.
+2. Выбрать правило открытия карты: посещение, радиус обзора, загрузка чанка или явный reveal.
+3. Сохранить это состояние в world save у хоста.
+4. Подключить синхронизацию minimap state для новых и уже подключенных игроков.
+
+## Acceptance Criteria
+
+- миникарта отображает мир в согласованной форме
+- открытая карта сохраняется у хоста
+- новые игроки и повторно подключившиеся игроки получают актуальное состояние карты
+
+## Verification
+
+- ручной тест: открыть часть мира, перезапустить мир и проверить восстановление
+- ручной тест: второй игрок подключается и получает ту же карту
+
+## Risks / Open Questions
+
+- нужно решить, хранить ли карту как coarse chunk-state, bitmap или другой компактный формат
+
+## Human Decisions Needed
+
+- none currently
+
+## Decision Log
+
+- `2026-03-31` - задача добавлена как backlog feature с host-authoritative persistence minimap state.
+
+## Handoff Notes
+
+Если позже понадобится отдельная личная карта игрока, не ломать эту задачу: вынести per-player overlays поверх общего world minimap state.