Mahjong Titans

Mahjong Titans (formerly Shanghai Solitaire) is a premium mahjong game developed by Oberon Games for Microsoft. It was introduced with Windows Vista as one of the new premium games alongside Purble Place and Chess Titans and is also bundled with Windows 7. The goal of the game is to eliminate all of the tiles by matching them in order to win. Before its inclusion in Windows Vista, it was originally bundled in the Microsoft Entertainment Pack 1 and Best of Microsoft Entertainment Pack under the name Taipei.

In Windows 8, a new version of the game developed by Arkadium titled Microsoft Mahjong was made available for download on the Microsoft Store.