Shadowrun is an online only (or single player with AI players) first-person shooter video game, developed by FASA Interactive for Xbox 360 and Windows Vista. It was later cracked to work on Windows XP, confirming speculation that it was intentionally limited to Windows Vista. The game features a buying system which is greatly inspired by the game Counter-Strike. The game is also inspired by the role-playing game of the same name. It is not set in the official Shadowrun timeline, but an alternate continuity invented by FASA Interactive. It was the first game to use Games for Windows - Live that allows for Windows users to play with Xbox 360 users.