Mahjong solitaire is a solitaire matching game that uses a set of Mahjong tiles rather than cards. The computer game was originally created by Brodie Lockard in 1981 and named Mah-Jongg after the game that uses the same tiles for play. Lockard claims that it was based on a centuries-old Chinese game called "the Turtle". However, it was not until Activision released Shanghai in 1986 for the Macintosh and Apple IIgs that the game gathered momentum. A version of this game was also included in the Microsoft Entertainment Pack for Windows 3.x in 1990 and went by the name Taipei. It was subsequently included in the Best of Windows Entertainment Pack. Premium editions of the Windows Vista operating system and Windows 7 include a version of the game known as Mahjong Titans.