Shanghai II is a puzzle game for the TurboGrafx CD that expands on the classic solitaire mahjong format. Players aim to clear a layout of 144 mahjong tiles arranged in various patterns by removing pairs of matching tiles that are not blocked on either side. The game includes six themed patterns representing different animals and offers hint and move-reversal features, alongside a timed play mode.
Shanghai II is a variant of the puzzle game also known as solitaire mahjong. 144 mahjong tiles are arranged in rows and stacked upon each other in various patterns; the player's goal is to remove pairs of matching tiles that do not have adjacent tiles from both sides until the whole board is clear. This variant features six patterns named after animals: tiger, scorpion, monkey, snake, panther, and dragon. The player can choose to display hints or reverse any amount of moves. A mode with a time limit is available as well.