The listing, Alien Shooter *Steam key* has ended.
http://store.steampowered.com/app/33100/?snr=1_7_suggest__13
About 1,000 monsters on each map, showing up to 100 monsters simultaneously on one playing screen
Many hours of game play with 10 missions and a survival mode
Full-on-action male or female character
Character upgrade facility
9 weapons of mass destruction
Red or Green blood selection
Highly imaginative selection of enemies
Reactive music which helps to drive the action
Useful gadgets - flash lights, medkits, battle drones
System Requirements OS:Windows 2000 / XP / Vista
Processor: 400 MHz
Memory: 128 MB
Graphics: Direct3D compatible 3D graphics card with 32 MB RAM
DirectX®: 7.0
Hard Drive: 50 MB Free Space
Sound: DirectSound compatible sound card