Free Mars Games on Steam
Steam currently has 295 Mars games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Mars game rankings were last updated on 5/19/2025.
Looking for more? Explore other lists such as:
- Best mars games on Steam
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- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Build Master: MarsVille
Build Master: MarsVille is a city-building and strategy game that invites you to create your Martian colony with your engineering genius and building skills. Form alliances, trade resources, and conquer rival colonies. Embrace the challenge and become the ultimate Build Master on Mars!
Build Master: MarsVille holds the #1 spot for "best free Mars game on Steam" with a Player Score of 43. Its score was calculated by analyzing a total of 219 reviews on Steam. This breaks down to a total of 90 positive reviews and 129 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Build Master: MarsVille on the Steam Deck (though some functionality may be limited).
| Release Date | 12/12/2023 |
| Developers | |
| Publisher | FIRST FUN HONG KONG LIMITED |
| Steam App Id | 2366120 |
2. The Planet Crafter: Prologue
Experience the first stages of terraforming an entire planet in this space survival open world terraforming crafting game prologue. Explore, survive, collect, build your base then create oxygen, heat and pressure to make an hostile planet livable for humanity.
The Planet Crafter: Prologue has achieved a Player Score of 94, placing it in the #2 spot for the best free Mars games. Its score was calculated by analyzing a total of 10,551 reviews on Steam. This breaks down to a total of 10,187 positive reviews and 364 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 12/19/2021 |
| Developer | Miju Games |
| Publisher | Miju Games |
| Steam App Id | 1830840 |
3. Red Planet Rampage
A build-your-own-gun FPS! Play online, splitscreen or vs. AI in this goofy party game with over 600 unique weapons! Outbid your opponents and assemble the wildest weapon on Mars!
Red Planet Rampage has achieved a Player Score of 80, placing it in the #3 spot for the best free Mars games. Its score was calculated by analyzing a total of 47 reviews on Steam. This breaks down to a total of 44 positive reviews and 3 negative reviews — making it "Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is not possible to play or run Red Planet Rampage on the Steam Deck.
| Release Date | 6/5/2024 |
| Developer | Hackerspace NTNU |
| Publisher | Hackerspace NTNU |
| Steam App Id | 2717710 |
4. Occupy Mars: Prologue (2020)
Occupy Mars: Prologue is an old introduction to the world of Occupy Mars in which you have to use your brain in order to survive. The Prologue tells a separate story in a closed location and shows a sneak-peek of the full game mechanics.
Occupy Mars: Prologue (2020) has achieved a Player Score of 75, placing it in the #4 spot for the best free Mars games. Its score was calculated by analyzing a total of 1,561 reviews on Steam. This breaks down to a total of 1,217 positive reviews and 344 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Occupy Mars: Prologue (2020) on the Steam Deck (though some functionality may be limited).
| Release Date | 8/20/2020 |
| Franchise | Pyramid Games S.A. |
| Developer | ▲ Pyramid Games |
| Publishers | |
| Steam App Id | 1310520 |
5. Rover Mechanic Simulator: Training Day
Welcome to the Training Day on Mars! In this free version of our advanced simulator you will learn everything you need to know about repairing and maintaining Mars Rovers.
Rover Mechanic Simulator: Training Day has achieved a Player Score of 69, placing it in the #5 spot for the best free Mars games. Its score was calculated by analyzing a total of 100 reviews on Steam. This breaks down to a total of 75 positive reviews and 25 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 5/21/2020 |
| Franchise | Pyramid Games S.A. |
| Developer | ▲ Pyramid Games |
| Publishers | |
| Steam App Id | 1314160 |
6. Terraformers: First steps on Mars
Terraformers: First Steps on Mars is a free prologue of Terraformers, featuring an exclusive challenge to lead humanity's first attempt at settling the Red Planet.
Terraformers: First steps on Mars has achieved a Player Score of 84, placing it in the #6 spot for the best free Mars games. Its score was calculated by analyzing a total of 683 reviews on Steam. This breaks down to a total of 610 positive reviews and 73 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 10/23/2021 |
| Developer | Asteroid Lab |
| Publishers | |
| Steam App Id | 1557040 |
7. Space Mechanic Simulator: Prologue
Space Mechanic Simulator: Prologue is a story prelude to the full version, which will introduce you to the world of cosmic repairs, greedy corporations, and cutting-edge technology.
Space Mechanic Simulator: Prologue has achieved a Player Score of 71, placing it in the #7 spot for the best free Mars games. Its score was calculated by analyzing a total of 63 reviews on Steam. This breaks down to a total of 50 positive reviews and 13 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Space Mechanic Simulator: Prologue on the Steam Deck (though some functionality may be limited).
| Release Date | 1/30/2023 |
| Franchise | Atomic Jelly |
| Developer | Atomic Jelly |
| Publishers | |
| Steam App Id | 1634280 |
8. Last Resort
Last Resort is a small co-op shooter in which you and up to 3 others defend humanity's first hotel on Mars against hostile aliens. Defend & power up generators, upgrade your weapons and gun down hordes of aliens to save the hotel!
Last Resort has achieved a Player Score of 56, placing it in the #8 spot for the best free Mars games. Its score was calculated by analyzing a total of 140 reviews on Steam. This breaks down to a total of 80 positive reviews and 60 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 6/28/2021 |
| Developer | Team Soupvision |
| Publisher | Breda University of Applied Sciences |
| Steam App Id | 1491650 |
9. Cyber Space Driver
As this a real CyberPunk style game, this is... Endless, buggy, synthwavy, peace of junk art. Cyber Space Driver... Drive straight, that's it.
Cyber Space Driver has achieved a Player Score of 73, placing it in the #9 spot for the best free Mars games. Its score was calculated by analyzing a total of 18 reviews on Steam. This breaks down to a total of 16 positive reviews and 2 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Cyber Space Driver on the Steam Deck.
| Release Date | 8/21/2023 |
| Developers | |
| Publisher | Daniel Swonson |
| Steam App Id | 2542380 |
10. Rover Mechanic Challenge - ERC Competition
𝗘𝗥𝗖 𝗥𝗼𝘃𝗲𝗿 𝗠𝗲𝗰𝗵𝗮𝗻𝗶𝗰 𝗖𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲 is an e-tournament based on the world's only simulator for repairing Mars Rovers. Take part in solving challenging tasks and become the master of leader board.
Rover Mechanic Challenge - ERC Competition has achieved a Player Score of 65, placing it in the #10 spot for the best free Mars games. Its score was calculated by analyzing a total of 13 reviews on Steam. This breaks down to a total of 10 positive reviews and 3 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 9/14/2020 |
| Developers | |
| Publishers | |
| Steam App Id | 1368970 |
More Free Mars Games
Explore even more rankings for the 31 best free Mars games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 65 | 12/12/2023 | 43 | Free | Steam Charts | |
| 12 | 12/19/2021 | 94 | Free | Steam Charts | |
| 3 | 6/5/2024 | 80 | Free | Steam Charts | |
| 2 | 8/20/2020 | 75 | Free | Steam Charts | |
| 1 | 5/21/2020 | 69 | Free | Steam Charts | |
| 1 | 10/23/2021 | 84 | Free | Steam Charts | |
| 1 | 1/30/2023 | 71 | Free | Steam Charts | |
| 1 | 6/28/2021 | 56 | Free | Steam Charts | |
| 1 | 8/21/2023 | 73 | Free | Steam Charts | |
| 1 | 9/14/2020 | 65 | Free | Steam Charts | |
 | 1 | 5/25/2020 | 90 | Free | Steam Charts | |
 | 1 | 9/16/2024 | 70 | Free | Steam Charts | |
 | 1 | 3/12/2025 | 74 | Free | Steam Charts | |
 | 1 | 12/13/2021 | 72 | Free | Steam Charts | |
 | 1 | 10/9/2022 | 71 | Free | Steam Charts | |
 | 1 | 4/20/2024 | 41 | Free | Steam Charts | |
 | 1 | 5/24/2021 | 72 | Free | Steam Charts | |
 | 1 | 5/19/2021 | 55 | Free | Steam Charts | |
 | 1 | 11/1/2021 | 62 | Free | Steam Charts | |
![Operation Satoshi [Early Version Alpha] steam charts](https://cdn.akamai.steamstatic.com/steam/apps/2135380/header.jpg) | 1 | 11/8/2022 | 52 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2025, May 19). Steam Store. Steam Store.
- Valve Corporation. (2025, May 19). Build Master: MarsVille on Steam. Steam Store.
- Valve Corporation. (2025, March 21). The Planet Crafter: Prologue on Steam. Steam Store.
- Valve Corporation. (2025, May 21). Red Planet Rampage on Steam. Steam Store.
- Valve Corporation. (2025, June 12). Occupy Mars: Prologue (2020) on Steam. Steam Store.
- Valve Corporation. (2025, March 13). Rover Mechanic Simulator: Training Day on Steam. Steam Store.
- Valve Corporation. (2025, April 24). Terraformers: First steps on Mars on Steam. Steam Store.
- Valve Corporation. (2025, May 14). Space Mechanic Simulator: Prologue on Steam. Steam Store.
- Valve Corporation. (2025, May 26). Last Resort on Steam. Steam Store.
- Valve Corporation. (2025, May 27). Cyber Space Driver on Steam. Steam Store.
- Valve Corporation. (2025, April 7). Rover Mechanic Challenge - ERC Competition on Steam. Steam Store.