2K Games has released a demo of BioShock on Xbox Live, and has said a PC version will follow later this month.
The digital package weighs in at 1.35GB, and due to high demand people have reported slow download speeds - so you may be in for a little wait.
BioShock is the first-person action adventure from Irrational Games, the studio recently renamed to 2K Boston. In it, you play as a pilot who stumbles on a submerged and hidden world, created by scientists in the 1930s to be a perfect society. However, you soon discover it has all gone a bit wrong, and bump into scary little girls with enormous diver-suited bodyguards.
What follows looks as though it could be one of the best games of the year.
BioShock is due for release on PC and Xbox 360 on 24th August. Look out for our review this Friday.
Head over to our BioShock gamepage to see all our coverage to date.