In order for you to play Alien Shooter: Revisited on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows 2000 / XP / Vista
Processor (CPU):
1.7 GHz
Memory (RAM):
512 MB
Graphics Card:
nVidia GeForce2 / ATI Radeon 8500 or better video card with 128 MB video memory
DirectX®:
8.1
Hard Drive:
250 MB Free Space
Sound:
DirectSound compatible sound card