Includes: Cities: Skylines Surviving Mars Cities: Skylines and Surviving Mars are taking on the town together in a new bundle that merges more management mayhem than ever. If you’ve been curious about the city-builder genre, dive right in by trying out classic city-building with the renowned Cities: Skylines or take your management skills to the stars with the sci-fi twist of Surviving Mars.

Go to https://www.xbox.com Login to your account Hover over your account link (the top right of the screen) a menu will appear, click on the "Redeem Code" button. On the next page, click "Redeem" Enter your code Click "Confirm" Click "Confirm" again to assign the key to your account.