diff --git a/src/DtsObject.hx b/src/DtsObject.hx
index 04286ed1..a812b4d3 100644
--- a/src/DtsObject.hx
+++ b/src/DtsObject.hx
@@ -1033,6 +1033,8 @@ class DtsObject extends GameObject {
 	public override function dispose() {
 		super.dispose();
 		this.level = null;
+		boundingCollider = null;
+		colliders = null;
 		this.dtsResource.release();
 	}
 }
diff --git a/src/Marble.hx b/src/Marble.hx
index d37b5534..fd04a0c7 100644
--- a/src/Marble.hx
+++ b/src/Marble.hx
@@ -1978,4 +1978,11 @@ class Marble extends GameObject {
 			marbledts.scale(this._prevRadius / 0.6666);
 		}
 	}
+
+	public override function dispose() {
+		super.dispose();
+		removeChildren();
+		camera = null;
+		collider = null;
+	}
 }
diff --git a/src/MarbleWorld.hx b/src/MarbleWorld.hx
index 5df2ca4c..c3f0110d 100644
--- a/src/MarbleWorld.hx
+++ b/src/MarbleWorld.hx
@@ -1979,8 +1979,9 @@ class MarbleWorld extends Scheduler {
 
 		if (sky != null)
 			sky.dispose();
-
+		sky = null;
 		instanceManager = null;
+		collisionWorld.dispose();
 		collisionWorld = null;
 		particleManager = null;
 		namedObjects = null;
diff --git a/src/collision/CollisionEntity.hx b/src/collision/CollisionEntity.hx
index 3cb21a36..3cc8f91f 100644
--- a/src/collision/CollisionEntity.hx
+++ b/src/collision/CollisionEntity.hx
@@ -70,6 +70,15 @@ class CollisionEntity implements IOctreeObject implements IBVHObject {
 		// this.bvh.build();
 	}
 
+	public function dispose() {
+		for (s in this.surfaces)
+			s.dispose();
+		go = null;
+		surfaces = null;
+		bvh = null;
+		octree = null;
+	}
+
 	public function setTransform(transform:Matrix) {
 		if (this.transform.equal(transform))
 			return;
diff --git a/src/collision/CollisionSurface.hx b/src/collision/CollisionSurface.hx
index 28f24471..e9237988 100644
--- a/src/collision/CollisionSurface.hx
+++ b/src/collision/CollisionSurface.hx
@@ -151,4 +151,15 @@ class CollisionSurface implements IOctreeObject implements IBVHObject {
 			n: _transformedNormals[p1]
 		};
 	}
+
+	public function dispose() {
+		points = null;
+		normals = null;
+		indices = null;
+		_transformedPoints = null;
+		_transformedNormals = null;
+		edgeData = null;
+		edgeConcavities = null;
+		originalIndices = null;
+	}
 }
diff --git a/src/collision/CollisionWorld.hx b/src/collision/CollisionWorld.hx
index a65fa016..1ad34fc3 100644
--- a/src/collision/CollisionWorld.hx
+++ b/src/collision/CollisionWorld.hx
@@ -127,4 +127,18 @@ class CollisionWorld {
 			this.dynamicOctree.update(entity);
 		}
 	}
+
+	public function dispose() {
+		for (e in entities) {
+			e.dispose();
+		}
+		for (e in dynamicEntities) {
+			e.dispose();
+		}
+		octree = null;
+		entities = null;
+		dynamicEntities = null;
+		dynamicOctree = null;
+		dynamicEntitySet = null;
+	}
 }