Two games based on 24 have been created so far.
24: Countdown
To promote season 4 of 24, LG Electronics sponsered a 24-based web driving game for Fox's official 24 website in December of 2004. 24: Countdown takes place between seasons two and three and involves Jack driving across three stages, trying to stop a rogue agent from detonating a bomb in Las Vegas.
24: The Game
24: The Game is a forthcoming Playstation 2 console game from Cambridge Studios, detailing the major events between seasons two and three.