Our planet isn’t the only one that needs defending! Alien machinery has started attacking our colonies in space and on alien planets. Battles, explosions, defenses… Plant the best defense throughout the entire galaxy and save our colonies from alien destruction. Features Special AbilitiesThree different special abilities to help you win every battle and defend every tower: Laser Strike Shock Wave Repair Completely different surroundings and battle locations: Space Desert Alien Mushroom Forest 9 different enemy machines and 16 different types of defender towers.

— Activation Details —

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.