The Stellaris dome set is a thematic set of visual skins for the Martian domes with a futuristic design and star-shaped elements. It is available for the following domes: Basic Dome: A small dome, suitable for the early days of the colony. Medium Dome: A medium-sized dome design. Oval Dome: An elongated dome design, which has space for two Spires. Mega Dome: The most advanced and spacious dome design.

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.