Left 4 Dead 1

Minimum Requirements :

Supported OS: Microsoft Windows XP / Vista / Vista64

Processor: Pentium 4 3.0GHz

Memory: 1 GB

Graphics: 128 MB, Shader model 2.0, ATI 9600, NVidia 6600 or better

Hard Drive: At least 7.5 GB of free space

Sound Card: DirectX 9.0c compatible sound card

Link Download : Click Here (Torrent)

You Must Have : Torrent, PowerIso, Daemon Tools