Alien Shooter is an top-down shooter video game from Sigma Team created in 2003. It is the first title in the Alien Shooter series to be followed by Alien Shooter: Vengeance. Alien Shooter has two expansions, Fight for Life and The Experiment. They each contain five new levels, including the conclusion to the alien shooter story. 1. Go to: http://store.steampowered.com/ and download STEAM client.
2. Click “Install Steam” (from the upper right corner)
3. Install and start application, login with your Account name and Password (create one if you don’t have).
4. Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.