The PC demo for BioShock has been releases on Steam. BioShock is a FPS that has been taking the video game world by storm with a Metacritic Score of 97 as of the time of posting! You will need 2.4GHz CPU, 1 GB of RAM, and a Direct X 9.0c compliant video card with 128MB RAM to play. The game is also avalibe on the Xbox 360.
BioShock Demo builds up Steam