Cruel (a card game) Golf (a card game)[lower-alpha 1] Minesweeper, written by David Bauer[lower-alpha 2] Pegged (a form of Peg solitaire), written by Mike Blaylock Taipei (later known as Mahjong Titans and Microsoft Mahjong)[lower-alpha 1][lower-alpha 2] Tetris (Windows version)[lower-alpha 1] TicTactics (a Tic-tac-toe variant) IdleWild (a screensaver program), written by Brad Christian