The highly anticipated and hyped PC first-person shooter BioShock is available for a try out. The demo can be downloaded from our games site, Blasteroids.com, and weighs 1,85GB. Be sure to try one of the top-rated games of the year. Also remember to update your graphics card drivers. BioShock Demo This demo for the highly anticipated BioShock allows you to try the early portions of the game in the sunken city of Rapture.