Surviving Mars is a sci-fi city builder about colonizing Mars and surviving the process. Choose a space agency for resources and financial support before determining the location for your colony. In March 2021, the base version of this game was free on the Epic Games Store. Now, the Deluxe edition is available for free on Steam, through Humble Bundle. But you better hurry because the offer is only available for 3 days (you can see a countdown on the redemption site). Redeeming it is quite simple: 1. First, click here and create an account on the Humble Bundle website (don't forget that you will have to verify the email in your inbox). Or log in with your existing account clicking here. 2. Once your account is created and you are logged into the site, click here to be taken to the Surviving Mars redemption page. After that, scroll down the page, check the box "Subscribe to newsletter" and click the button "Get it Now". 3. As the game will be redeemed on your Steam account, you will have to link the account to the Humble Bundle site. Just click the green button that will appear on the screen. 4. Log in to the Steam site (with your Steam account, obviously) and click link account. 5. Following this, a success message will appear on the Humble Bundle site and you will be redirected back to the redemption page. 6. Go back to the button "Get it Now" and the game redemption will be processed. 7. Now click the button "Preview Your E-mail" and then click the button "Redeem Now". 8. On the next page, scroll down until you find the button for "Reveal Your Steam Key". 9. A code will appear. Click the button "Redeem" to go directly to the game activation page on Steam. 11. Finally, check the terms acceptance box and click continue. Congratulations! The game is now active in your Steam library. Note: if you already had Surviving Mars (base) on Steam, you will receive a DLC containing the Deluxe Edition.