You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below and gather the resources you need to repair your ship and set off to explore the vast, infinite universe… In Starbound, you create your own story – there’s no wrong way to play! You may choose to save the universe from the forces that destroyed your home, uncovering greater galactic mysteries in the process, or you may wish to forego a heroic journey entirely in favor of colonizing uncharted planets.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.