System requirements Left 4 Dead
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

Minimum pc requirements list Left 4 Dead
Minimum:
- Supported OS: Windows® 7 32/64-bit / Vista 32/64 / XP
- 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
Recommended pc requirements list Left 4 Dead
Recommended:
- Supported OS: Windows® 7 32/64-bit / Vista 32/64 / XP
- Processor: Intel core 2 duo 2.4GHz
- Memory: 1 GB
- Graphics: Shader model 3.0, NVidia 7600, ATI X1600 or better