Killing Floor

The Min Requirements for Killing Floor is 
CPU: 1.2 GHz or equivalent. 
Memory: 512 MB RAM. 
Graphics hardware: 64 MB DX9 compliant. 
Sound hardware: DX8.1 compatible audio. 

and the Recommended is 
CPU: 2.4 GHz or equivalent 
Memory: 1 GB RAM 
Graphics hardware: 128 MB DX9 compliant with PS 2.0 support 
Sound hardware: EAX compatible 

Download:

Torrent

Size : 1.6 Gb