SilverButton Tiles is a free tileset for the game, Shanghai II. Put the SilverButton Tiles file in the Layouts & Tilesets folder in the Shanghai II folder, then start the game and choose SilverButton Tiles from the Tiles menu. Check out the menu, Help…Guide to these Tiles, to see which sets of four tiles match.
This tileset is not quite as hard as it looks at first glance, but it does offer a challenge.
