diff --git a/gui/game.py b/gui/game.py
index 6ac1e0b..795e058 100644
--- a/gui/game.py
+++ b/gui/game.py
@@ -18,11 +18,6 @@ font = pygame.font.Font("Baloo2-Bold.ttf", 40)
 display = pygame.display.set_mode(WINDOW_SIZE)
 clock = pygame.time.Clock()
 
-# variables
-tiles = []
-menu_manager = MenuManager(display, (30, 30, 40))  # background color
-player = "red"
-
 # colorss
 primary_color     = (70, 130, 180)  # button background
 hover_color       = (51, 102, 145)  # button hover
@@ -37,8 +32,16 @@ red_tile_hover    = (220, 0, 0)     # the red that a hovered red tile is
 yellow_tile       = (255, 255, 0)   # the yellow that a yellow tile is
 yellow_tile_hover = (220, 220, 0)   # the yellow that a hovered yellow tile is
 
+# variables
+tiles = []
+menu_manager = MenuManager(display, bg_color)  # background color
+player = "red"
+board_full = False
+
 # menu functions
 def start_game_func(*_):
+    global board_full
+    board_full = False
     create_tiles()
     menu_manager.change_menu("game")
 
@@ -61,19 +64,19 @@ def create_tiles():
         for r in range(ROWS):
             x = start_x + c * (TILE_SIZE + TILE_SPACING)
             y = start_y + r * (TILE_SIZE + TILE_SPACING)
+
+            id = str(c * ROWS + r)
             
             tile = Button(
-                x, y, TILE_SIZE, TILE_SIZE, str(c * ROWS + r),
-                tile_color, tile_hover, tile_text, tile_press, None, 30, (str(c * ROWS + r), c, r),
-                rounding=5
+                x, y, TILE_SIZE, TILE_SIZE, "",
+                tile_color, tile_hover, tile_text, tile_press, None, 30, (id, c, r),
+                rounding=30
             )
             col.append(tile)
         tiles.append(col)
 
-def tile_press(tile: Button):
+def drop_tile(col_index):
     global player
-
-    _, col_index, _ = tile.extra_data  # we only care about column
     column = tiles[col_index]
 
     # find the lowest unoccupied tile in this column
@@ -81,7 +84,7 @@ def tile_press(tile: Button):
         target_tile = column[r]
 
         # check if already taken (colored by a player)
-        if target_tile.color not in (red_tile, yellow_tile):
+        if target_tile.color == tile_color:
             # claim this tile for the current player
             target_tile.color = red_tile if player == "red" else yellow_tile
             target_tile.hover_color = red_tile_hover if player == "red" else yellow_tile_hover
@@ -96,6 +99,28 @@ def tile_press(tile: Button):
         # column is full
         print(f"Column {col_index} is full!")
 
+def is_board_full():
+    global tiles, board_full
+    for col in tiles:
+        for row in reversed(range(ROWS)):
+            target = col[row]
+            
+            if target.color == tile_color:
+                return False
+    
+    return True
+
+def tile_press(tile: Button):
+    global board_full
+
+    id, col_index, row_index = tile.extra_data  # we only care about column
+    drop_tile(col_index)
+
+    if is_board_full():
+        board_full = True
+        print(f"Draw! The board is full.")
+    
+
 # button stuff
 width, height = 280, 75
 x = WINDOW_SIZE[0] / 2 - width / 2
@@ -113,6 +138,9 @@ go_back_button = Button(x, y, width, height, "Go back",
                         primary_color, hover_color, text_color,
                         go_back, "Baloo2-Bold.ttf", 50, rounding=8)
 
+game_drawn_button = Button(x, y*2-50, width, height, "Go back",
+                           primary_color, hover_color, text_color,
+                           go_back, "Baloo2-Bold.ttf", 50, rounding=8)
 
 # menu handlers
 # start
@@ -134,17 +162,26 @@ def settings_menu_draw():
     display.blit(text_surface, text_rect)
     go_back_button.draw(display)
 
+
 # game
 def game_menu_events(event):
-    for col in tiles:
-        for tile in col:
-            tile.handle_event(event)
+    if board_full:
+        game_drawn_button.handle_event(event)
+    else:
+        for col in tiles:
+            for tile in col:
+                tile: Button
+                tile.handle_event(event)
 
 def game_menu_draw():
     for col in tiles:
         for tile in col:
+            tile: Button
             tile.draw(display)
 
+    if board_full:
+        game_drawn_button.draw(display)
+
 # register the menus
 menu_manager.register_menu("start", start_menu_events, start_menu_draw)
 menu_manager.register_menu("settings", settings_menu_events, settings_menu_draw)