Xbox 360 got a pleasant surprise on Sunday: a working BioShock demo. Unfortunately, the same could not be said for PC users. 2K Games stated that making a working PC demo was a lot harder than a working Xbox 360 demo, because they have to make it work on a large variety of machines. While Xbox 360 customers are happily fragging each other on (a demo of) one of the most anticipated shooters of the year, PC owners need to wait until the BioShock demo goes through the final stages of QA at 2K Games.

We tried as hard as humanly possible to get it out to you guys simultaneously with the 360 demo, but we needed to make sure that it was perfect -- that all drivers were ready, and that the game looked great on a huge variety of computers

In other news, BioShock: Breaking the Mold, a large artbook containing all sorts of information on the BioShock world (including spoilers), is now available for download.