Humanity Asset is a Metroid-style 3D platformer that pays homage to the traditional retro classic shoot ‘em up genre. Aliens have invaded Earth to strip the planet of its resources, to save their own dying planet. As in all classic shoot 'em ups, only you can save the day – now there’s a surprise!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.