Assassin's Creed Released via Steam

Assassin's Creed now on Steam
Valve announced that Assassin's Creed for PC is now available on Steam. The game features four new mission types exclusive to the PC version, including the Rooftop Race Challenge, a race to a specified location, and the Archer Stealth Assassination Challenge, where the player must assassinate all archers in a certain zone to help out fellow Assassins.