diff --git a/assets/minesweeper/CMakeLists.txt b/assets/minesweeper/CMakeLists.txt
index 96e0af1..c98c82d 100644
--- a/assets/minesweeper/CMakeLists.txt
+++ b/assets/minesweeper/CMakeLists.txt
@@ -3,4 +3,6 @@
 # This software is released under the MIT License.
 # https://opensource.org/licenses/MIT
 
-add_asset(TILESET ui.png type=PALETTIZED tileWidth=8 tileHeight=8)
\ No newline at end of file
+add_asset(TILESET ui.png type=PALETTIZED tileWidth=8 tileHeight=8)
+add_asset(TILESET cell.png type=PALETTIZED tileWidth=8 tileHeight=8)
+add_asset(TILESET grid.png type=PALETTIZED tileWidth=8 tileHeight=8)
\ No newline at end of file
diff --git a/assets/palette/paletteMinesweeper.png b/assets/palette/paletteMinesweeper.png
index 26bb086..7193630 100644
Binary files a/assets/palette/paletteMinesweeper.png and b/assets/palette/paletteMinesweeper.png differ
diff --git a/assets/scene/minesweeper.lua b/assets/scene/minesweeper.lua
index 198ff35..4be4ba9 100644
--- a/assets/scene/minesweeper.lua
+++ b/assets/scene/minesweeper.lua
@@ -9,11 +9,85 @@ module('text')
 module('tileset')
 module('texture')
 
+CELL_STATE_DEFAULT = 0
+CELL_STATE_HOVER = 1
+CELL_STATE_DOWN = 2
+CELL_STATE_DISABLED = 3
+
 screenSetBackground(colorBlack())
 camera = cameraCreate(CAMERA_PROJECTION_TYPE_ORTHOGRAPHIC)
 
-tileset = tilesetGetByName("ui")
-ui = textureLoad(tileset.texture)
+tilesetUi = tilesetGetByName("ui")
+textureUi = textureLoad(tilesetUi.texture)
+
+tilesetGrid = tilesetGetByName("grid")
+textureGrid = textureLoad(tilesetGrid.texture)
+gridPiece = tilesetPositionGetUV(tilesetGrid, 0, 0)
+gridSlice = tilesetPositionGetUV(tilesetGrid, 11, 3)
+
+tilesetCell = tilesetGetByName("cell")
+textureCell = textureLoad(tilesetCell.texture)
+cellSliceHover = tilesetPositionGetUV(tilesetCell, 3, 4)
+cellSliceDefault = tilesetPositionGetUV(tilesetCell, 3, 5)
+cellSliceDown = tilesetPositionGetUV(tilesetCell, 3, 6)
+cellSliceDisabled = tilesetPositionGetUV(tilesetCell, 3, 7)
+
+width = 10
+height = 14
+
+i = 0
+cells = {}
+for y = 1, height do
+  for x = 1, width do
+    cells[i] = CELL_STATE_DEFAULT
+    i = i + 1
+  end
+end
+
+function cellDraw(x, y, type)
+  if type == CELL_STATE_HOVER then
+    slice = cellSliceHover
+  elseif type == CELL_STATE_DOWN then
+    slice = cellSliceDown
+  elseif type == CELL_STATE_DISABLED then
+    slice = cellSliceDisabled
+  else
+    slice = cellSliceDefault
+  end
+
+  spriteBatchPush(textureCell,
+    x, y,
+    x + tilesetCell.tileWidth, y + tilesetCell.tileHeight,
+    colorWhite(),
+    slice.u0, slice.v0,
+    slice.u1, slice.v1
+  )
+end
+
+function backgroundDraw()
+  local t = (TIME.time * 3) % 1
+  local offXStart = gridPiece.u1 * t
+  local offYStart = gridPiece.v1 * t
+  local offXEnd = offXStart + gridPiece.u1
+  local offYEnd = offYStart + gridPiece.v1
+  
+  -- Tile background
+  local cols = math.ceil(screenGetWidth() / tilesetGrid.tileWidth)
+  local rows = math.ceil(screenGetHeight() / tilesetGrid.tileHeight)
+
+  for y = 0, rows do
+    for x = 0, cols do
+      spriteBatchPush(
+        textureGrid,
+        x * tilesetGrid.tileWidth, y * tilesetGrid.tileHeight,
+        (x + 1) * tilesetGrid.tileWidth, (y + 1) * tilesetGrid.tileHeight,
+        colorWhite(),
+        gridSlice.u0 + offXStart, gridSlice.v0 + offYStart,
+        gridSlice.u1 + offXEnd, gridSlice.v1 + offYEnd
+      )
+    end
+  end
+end
 
 function sceneDispose()
 end
@@ -27,17 +101,20 @@ function sceneRender()
   camera.bottom = screenGetHeight()
   camera.right = screenGetWidth()
 
-  slice = tilesetTileGetUV(tileset, 0)
-  spriteBatchPush(ui,
-    0, 0,
-    ui.width * slice.u1, ui.height * slice.v1,
-    colorRainbow(),
-    slice.u0, slice.v0,
-    slice.u1, slice.v1
-  )
-  spriteBatchFlush()
+  backgroundDraw()
 
-  -- textDraw(0, 0, "Hello World", colorRainbow())
+  offsetX = 32
+  offsetY = 32
+  for y = 0, height - 1 do
+    for x = 0, width - 1 do
+      cellDraw(
+        x * tilesetCell.tileWidth + offsetX,
+        y * tilesetCell.tileHeight + offsetY,
+        cells[i]
+      )
+    end
+  end
+  spriteBatchFlush()
 
   cameraPopMatrix()
 end
\ No newline at end of file
diff --git a/src/script/module/display/modulecolor.c b/src/script/module/display/modulecolor.c
index 9063a27..8fe4f0f 100644
--- a/src/script/module/display/modulecolor.c
+++ b/src/script/module/display/modulecolor.c
@@ -27,9 +27,8 @@ void moduleColor(scriptcontext_t *context) {
     lua_pushstring(context->luaState, "__tostring");
     lua_pushcfunction(context->luaState, moduleColorToString);
     lua_settable(context->luaState, -3);
-
-    lua_pop(context->luaState, 1);
   }
+  lua_pop(context->luaState, 1);
 
   lua_register(context->luaState, "color", moduleColorFuncColor);
   lua_register(context->luaState, "colorRainbow", moduleColorRainbow);
diff --git a/src/script/module/display/moduletileset.c b/src/script/module/display/moduletileset.c
index 9e7e732..5cd8542 100644
--- a/src/script/module/display/moduletileset.c
+++ b/src/script/module/display/moduletileset.c
@@ -46,6 +46,21 @@ int moduleTilesetIndex(lua_State *l) {
   } else if(stringCompare(key, "texture") == 0) {
     lua_pushstring(l, ts->image);
     return 1;
+  } else if(stringCompare(key, "tileWidth") == 0) {
+    lua_pushnumber(l, ts->tileWidth);
+    return 1;
+  } else if(stringCompare(key, "tileHeight") == 0) {
+    lua_pushnumber(l, ts->tileHeight);
+    return 1;
+  } else if(stringCompare(key, "tileCount") == 0) {
+    lua_pushnumber(l, ts->tileCount);
+    return 1;
+  } else if(stringCompare(key, "columns") == 0) {
+    lua_pushnumber(l, ts->columns);
+    return 1;
+  } else if(stringCompare(key, "rows") == 0) {
+    lua_pushnumber(l, ts->rows);
+    return 1;
   }
 
   lua_pushnil(l);
diff --git a/src/script/module/time/moduletime.c b/src/script/module/time/moduletime.c
index a813a73..9d666fa 100644
--- a/src/script/module/time/moduletime.c
+++ b/src/script/module/time/moduletime.c
@@ -13,21 +13,20 @@ void moduleTime(scriptcontext_t *ctx) {
 
   // Script structure
   if(luaL_newmetatable(ctx->luaState, "time_mt")) {
-    // Metatable is new, set __index
-    lua_pushstring(ctx->luaState, "__index");
     lua_pushcfunction(ctx->luaState, moduleTimeIndex);
-    lua_settable(ctx->luaState, -3);
+    lua_setfield(ctx->luaState, -2, "__index");
   }
+  lua_pop(ctx->luaState, 1);
 
-  // Global time struct
-  lua_pushlightuserdata(ctx->luaState, &TIME);
+  dusktime_t **ud = (dusktime_t**)lua_newuserdatauv(
+    ctx->luaState, sizeof(dusktime_t*), 0
+  );
+  *ud = &TIME;
   luaL_setmetatable(ctx->luaState, "time_mt");
   lua_setglobal(ctx->luaState, "TIME");
 }
 
 int moduleTimeIndex(lua_State *L) {
-  assertNotNull(L, "Lua state cannot be NULL.");
-
   const char_t *key = lua_tostring(L, 2);
   assertStrLenMin(key, 1, "Key cannot be empty.");
 
diff --git a/tools/asset/process/image.py b/tools/asset/process/image.py
index 570527a..0daa917 100644
--- a/tools/asset/process/image.py
+++ b/tools/asset/process/image.py
@@ -45,6 +45,7 @@ def processPalettizedImage(asset):
         elif color[3] == 0 and palColor[3] == 0:
           break
       else:
+        print('Pallete {} does not contain color #{}'.format(p['paletteName'], '{:02x}{:02x}{:02x}{:02x}'.format(color[0], color[1], color[2], color[3])))
         hasAllColors = False
         break
     if hasAllColors: