About the game

Vicious predators from the far ends of the universe are invading our planet!They’re mean and wicked, creating havoc everywhere they go! Time for the aptly named “Alien Busters” to take control, get nasty and kick some serious martian butt!

How to activate

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). 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. After successful code verification go to the "MY GAMES" tab and start downloading.

System requirements