diff --git a/Assets/Scenes/SampleScene.unity b/Assets/Scenes/SampleScene.unity
index c8a14f8..188594a 100644
--- a/Assets/Scenes/SampleScene.unity
+++ b/Assets/Scenes/SampleScene.unity
@@ -690,6 +690,16 @@ Tilemap:
   m_GameObject: {fileID: 994327116}
   m_Enabled: 1
   m_Tiles:
+  - first: {x: -8, y: -7, z: 0}
+    second:
+      serializedVersion: 2
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
+      m_TileMatrixIndex: 0
+      m_TileColorIndex: 0
+      m_TileObjectToInstantiateIndex: 65535
+      dummyAlignment: 0
+      m_AllTileFlags: 1073741825
   - first: {x: -7, y: -7, z: 0}
     second:
       serializedVersion: 2
@@ -720,6 +730,26 @@ Tilemap:
       m_TileObjectToInstantiateIndex: 65535
       dummyAlignment: 0
       m_AllTileFlags: 1073741825
+  - first: {x: 6, y: -7, z: 0}
+    second:
+      serializedVersion: 2
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
+      m_TileMatrixIndex: 0
+      m_TileColorIndex: 0
+      m_TileObjectToInstantiateIndex: 65535
+      dummyAlignment: 0
+      m_AllTileFlags: 1073741825
+  - first: {x: 7, y: -7, z: 0}
+    second:
+      serializedVersion: 2
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
+      m_TileMatrixIndex: 0
+      m_TileColorIndex: 0
+      m_TileObjectToInstantiateIndex: 65535
+      dummyAlignment: 0
+      m_AllTileFlags: 1073741825
   - first: {x: -6, y: -6, z: 0}
     second:
       serializedVersion: 2
@@ -823,8 +853,8 @@ Tilemap:
   - first: {x: -4, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -833,8 +863,8 @@ Tilemap:
   - first: {x: -3, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -843,8 +873,8 @@ Tilemap:
   - first: {x: -2, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -853,8 +883,8 @@ Tilemap:
   - first: {x: -1, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -863,8 +893,8 @@ Tilemap:
   - first: {x: 0, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -873,8 +903,8 @@ Tilemap:
   - first: {x: 1, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -883,8 +913,8 @@ Tilemap:
   - first: {x: 2, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -893,8 +923,8 @@ Tilemap:
   - first: {x: 3, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -903,8 +933,8 @@ Tilemap:
   - first: {x: 4, y: -2, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -923,8 +953,8 @@ Tilemap:
   - first: {x: -6, y: -1, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -943,8 +973,8 @@ Tilemap:
   - first: {x: -6, y: 0, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -963,8 +993,8 @@ Tilemap:
   - first: {x: -6, y: 1, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 1
-      m_TileSpriteIndex: 1
+      m_TileIndex: 0
+      m_TileSpriteIndex: 0
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
@@ -1072,17 +1102,17 @@ Tilemap:
       m_AllTileFlags: 1073741825
   m_AnimatedTiles: {}
   m_TileAssetArray:
-  - m_RefCount: 26
+  - m_RefCount: 41
     m_Data: {fileID: 11400000, guid: 8309c65724c3a8e40884dda0cfb55bae, type: 2}
-  - m_RefCount: 12
-    m_Data: {fileID: 11400000, guid: 27176e78b9a778f4cbafc74696719e6d, type: 2}
+  - m_RefCount: 0
+    m_Data: {fileID: 0}
   m_TileSpriteArray:
-  - m_RefCount: 26
+  - m_RefCount: 41
     m_Data: {fileID: -855298285791758126, guid: 9fc32b26c4b0b87459965e872a8507d2, type: 3}
-  - m_RefCount: 12
-    m_Data: {fileID: -1515544073, guid: 9fc32b26c4b0b87459965e872a8507d2, type: 3}
+  - m_RefCount: 0
+    m_Data: {fileID: 0}
   m_TileMatrixArray:
-  - m_RefCount: 38
+  - m_RefCount: 41
     m_Data:
       e00: 1
       e01: 0
@@ -1101,13 +1131,13 @@ Tilemap:
       e32: 0
       e33: 1
   m_TileColorArray:
-  - m_RefCount: 38
+  - m_RefCount: 41
     m_Data: {r: 1, g: 1, b: 1, a: 1}
   m_TileObjectToInstantiateArray: []
   m_AnimationFrameRate: 1
   m_Color: {r: 1, g: 1, b: 1, a: 1}
-  m_Origin: {x: -7, y: -7, z: 0}
-  m_Size: {x: 14, y: 14, z: 1}
+  m_Origin: {x: -8, y: -7, z: 0}
+  m_Size: {x: 16, y: 14, z: 1}
   m_TileAnchor: {x: 0.5, y: 0.5, z: 0}
   m_TileOrientation: 0
   m_TileOrientationMatrix: