Avid Gamer writes;
"Several titbits for you steam users out there. The first is that you can now grab Assassin's Creed on the PC off Steam. The PC version comes with four PC exclusive missions; Rooftop Race, Archer Stealth Assassination Challenge. If you're a US / Canadian reader then you can now pre-purchase Tom Clancy's Rainbow Six Vegas 2 for $49.95."