Partake in a 2D retro action the likes of which hasn’t been seen since the collapse of the arcades decades ago. Experience intense non-stop action as you fight off space insect hordes, collect weapons and power-ups, and battle for high score bragging rights against the entire world. And you know, save mankind from extinction at the hands of caterpillars, scorpions, spiders, and a slew of other ill-tempered giant killer insects.

— 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.