Plot: Purble Place was a suite of three computer games. Developed by Oberon Media for Microsoft, it was introduced in Windows Vista and is also included in Windows 7. It was no longer available starting with Windows 8. Wikipedia
Plot: Chess Titans is a chess game with 3D graphics developed by Oberon Games and included in Windows Vista and Windows 7 Home Premium, Business/Professional, Enterprise, and Ultimate. It is a fully animated, photorealistic interactive game with ten difficulty levels. Wikipedia
Plot: Minesweeper is a single-player puzzle video game. The objective of the game is to clear a rectangular board containing hidden mines or bombs without detonating any of them, with help from clues about the number of neighboring mines in each field. Wikipedia
Plot: Microsoft Mahjong is a computer game version of mahjong solitaire published by Microsoft. The version titled Mahjong Titans was developed by Oberon Games and included in Windows Vista and Windows 7. Wikipedia