All Fountain tiles played by players must follow the following rules:
1) A tile must lie beside another tile or completely on top of any number of tiles and must be fully supported by other tiles or by the table underneath.
2) At least 2 dark bricks on the new tile must touch 2 dark bricks on an existing tile.
Once placed, tiles may not be moved.
If a Fountain tile or another Bonus token is placed in a way that covers a previously placed Bonus token, that token is removed from the game.