The newest installment in the best-selling and highest-rated action game series of all time. Battle creatures sprawling above and below ground in the White Forest. Then, take a thrilling ride with Alyx in a new modified vehicle as you enjoy the most breathtaking and revealing Half-Life game ever made.
Open your mind to a new way of gaming. Portal blends puzzles, first person action, and adventure gaming to produce an experience unlike any other. With the Portal device, manipulate your surroundings to complete dozens of unique challenges. Are you ready to start thinking with Portals?
Team Fortress 2:
The sequel to the granddaddy of class-based multiplayer gaming. Join and battle teams with wildly-varying player classes - from the flame-throwing Pyro to the room-clearing heavy weapons guy. Featuring a distinctive visual style, Team Fortress 2 features all-new multiplayer game modes.
Also available from ASDA (ONLINE) and Lovefilm from same price. However seeing as Asda gave me a parking ticket the other day I thought I'd market thehut on this occassion.
PS This is for the PC and you shouldn't vote cold simply because you think its "better" on the PS3 or XBOX360. I am not going to go out and buy a new game console just so I can play a better port.