An inventive tower defense/ first person shooter hybrid that pits elite soldier Skye against various forms of alien life on a small set of unique maps. Skye must build and upgrade defensive structures while jumping into the fray to help her creations take down the hostile invaders.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.