At its core, Space Pirates and Zombies is an action based, skill oriented, top down space combat game. It's similar to the ones we knew and loved in years past, but now using full physics simulation and modern graphics for those oh so pretty explosions. But as you dig deeper, SPAZ becomes much more.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.