"Planet R-12" is a 2D tactical shooter. Your squad of persistent soldiers accidently landed on a planet of robots, populated by hostile mechanisms and war machines. Each step on a planet is full of dangers and soldiers really need your skills and abilities.
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.