Left 4 Dead 2

Operating support system : Window 7/Vista/Vista 64/ XP
CPU : Pentium 4 3.0GHz
RAM : XP 1GB / Vista 1GB
Graphic card : Direct x, a 9.0 supports c sweideo, graphics cards, and 128 mb 2.0 model A Radeon X800, GeForce 2.66 800 x gt more than
Hard disk : The clearance of at least 7.5 GB
Sound card : A sound card supports DirectX 9.0c


Operating support system : Window 7/ Vista / Vista 64/ XP
CPU : Intel Core 2 Duo 2.4GHz
RAM : XP 1GB / Vista 2GB
Graphic card : Direct x c 9.0 supports graphics cards, and, more than 3.0, Radeon, GeForce 1,600 x sweideo model 76 gt
Hard disk : The clearance of at least 7.5 GB
Sound card : A sound card supports DirectX 9.0c