Free Mars Games on Steam
Steam currently has 321 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 2/4/2026.
Looking for more? Explore other lists such as:
- Best mars games on Steam
- Best mars Steam Deck games
- Best mars Steam games for Mac OS
- Best mars Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. DarkOrbit Reloaded
Dark Orbit is a free-2-play space MMO where three companies battle for galactic domination. Customize ships, trade resources, fight aliens and uncover a grand conspiracy on your epic cosmic journey. Thrilling PvP and PvE missions await! Will you lead your faction beyond the final frontier?
DarkOrbit Reloaded holds the #1 spot for "best free Mars game on Steam" with a Player Score of 31. Its score was calculated by analyzing a total of 300 reviews on Steam. This breaks down to a total of 80 positive reviews and 220 negative reviews — making it "Mostly Negative" 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 | 12/3/2025 |
| Developer | Bigpoint GmbH |
| Publisher | Bigpoint GmbH |
| Steam App Id | 4054110 |
2. 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 has achieved a Player Score of 50, placing it in the #2 spot for the best free Mars games. Its score was calculated by analyzing a total of 286 reviews on Steam. This breaks down to a total of 143 positive reviews and 143 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 |
3. 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 #3 spot for the best free Mars games. Its score was calculated by analyzing a total of 10,620 reviews on Steam. This breaks down to a total of 10,245 positive reviews and 375 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 |
4. Doom 3: Phobos
Waking up on Mars with no memory and a wound you can’t explain, you begin a desperate search for answers - about yourself, your past, and the catastrophe looming over two worlds.
Doom 3: Phobos has achieved a Player Score of 68, placing it in the #4 spot for the best free Mars games. Its score was calculated by analyzing a total of 80 reviews on Steam. This breaks down to a total of 60 positive reviews and 20 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 | 9/30/2025 |
| Developer | Team Future |
| Publisher | Team Future |
| Steam App Id | 3978420 |
5. Quit Smoking VR Therapist
Do you want to quit smoking? This application can help you to eliminate and erase your taste for a cigarette. Based on the latest knowledge in the field of psychology, neuroscience and hypnotherapy.
Quit Smoking VR Therapist 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 13 reviews on Steam. This breaks down to a total of 11 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 Quit Smoking VR Therapist on the Steam Deck.
6. Cyber Space Driver
This is little project in the spirit of endless runner genre, so as this a real CyberPunk style project, this is... buggy, synthwavy, peace of junk-art. Cyber Space Driver... Drive straight, that's it.
Cyber Space Driver has achieved a Player Score of 69, placing it in the #6 spot for the best free Mars games. Its score was calculated by analyzing a total of 26 reviews on Steam. This breaks down to a total of 21 positive reviews and 5 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 | |
| Publishers | |
| Steam App Id | 2542380 |
7. Fast Finger Rule
Fast Finger Rule is a minimalistic battle planet duel simulator. To make precise shots you just need to click on your planet at right time. Game has 10+ planet shield types and 15+ planets of 3 different tiers.
Fast Finger Rule has achieved a Player Score of 64, placing it in the #7 spot for the best free Mars games. Its score was calculated by analyzing a total of 9 reviews on Steam. This breaks down to a total of 7 positive reviews and 2 negative reviews — making it "9 user reviews" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Fast Finger Rule on the Steam Deck (though some functionality may be limited).
8. 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 64, placing it in the #8 spot for the best free Mars games. Its score was calculated by analyzing a total of 16 reviews on Steam. This breaks down to a total of 12 positive reviews and 4 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 |
9. Operation Satoshi [Early Version Alpha]
This is a game in development. It has been published just to get feedback from community. We are aware there will be defects and will do weekly updates. Feedback can be sent to [email protected]. A shooting RPG game to rescue a kidnapped scientist, Nakamoto Satoshi.
![Operation Satoshi [Early Version Alpha] banner](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/2135380/header.jpg)
Operation Satoshi [Early Version Alpha] has achieved a Player Score of 54, placing it in the #9 spot for the best free Mars games. Its score was calculated by analyzing a total of 12 reviews on Steam. This breaks down to a total of 7 positive reviews and 5 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 | 11/8/2022 |
| Developer | MetaXSeed Games |
| Publisher | MetaXSeed Games |
| Steam App Id | 2135380 |
10. Mars Power Industries: First Job
Is that your first job here at Mars Power Industries? Okay... Let's learn how to supply your tiny colony. Think of this like a puzzle. Sparkly crystals make power and your buildings need that sweet, sweet blue jazz. Black goo? Right, umm... Best to ign#-$!ore it. We do&!@ ONE #%& OF &#@ US %!&
Mars Power Industries: First Job has achieved a Player Score of 82, placing it in the #10 spot for the best free Mars games. Its score was calculated by analyzing a total of 69 reviews on Steam. This breaks down to a total of 65 positive reviews and 4 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 | 6/9/2020 |
| Franchise | Kurki.games |
| Developers | |
| Publishers | |
| Steam App Id | 1300560 |
More Free Mars Games
Explore even more rankings for the 32 best free Mars games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 51 | 12/3/2025 | 31 | Free | Steam Charts | |
| 36 | 12/12/2023 | 50 | Free | Steam Charts | |
| 12 | 12/19/2021 | 94 | Free | Steam Charts | |
| 2 | 9/30/2025 | 68 | Free | Steam Charts | |
| 1 | 4/21/2023 | 69 | Free | Steam Charts | |
| 1 | 8/21/2023 | 69 | Free | Steam Charts | |
| 1 | 11/1/2021 | 64 | Free | Steam Charts | |
| 1 | 9/14/2020 | 64 | Free | Steam Charts | |
| 1 | 11/8/2022 | 54 | Free | Steam Charts | |
| 1 | 6/9/2020 | 82 | Free | Steam Charts | |
 | 1 | 3/12/2025 | 73 | Free | Steam Charts | |
 | 1 | 5/24/2021 | 74 | Free | Steam Charts | |
 | 1 | 1/18/2022 | 50 | Free | Steam Charts | |
 | 1 | 12/18/2020 | 65 | Free | Steam Charts | |
 | 1 | 1/30/2023 | 71 | Free | Steam Charts | |
 | 1 | 2/21/2024 | 78 | Free | Steam Charts | |
 | 1 | 10/9/2022 | 72 | Free | Steam Charts | |
 | 1 | 12/24/2020 | 47 | Free | Steam Charts | |
 | 1 | 11/27/2018 | 72 | Free | Steam Charts | |
 | 1 | 5/19/2021 | 55 | 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. (2026, February 4). Steam Store. Steam Store.
- Valve Corporation. (2026, February 4). DarkOrbit Reloaded on Steam. Steam Store.
- Valve Corporation. (2026, January 15). Build Master: MarsVille on Steam. Steam Store.
- Valve Corporation. (2025, December 10). The Planet Crafter: Prologue on Steam. Steam Store.
- Valve Corporation. (2026, February 2). Doom 3: Phobos on Steam. Steam Store.
- Valve Corporation. (2025, October 10). Quit Smoking VR Therapist on Steam. Steam Store.
- Valve Corporation. (2025, December 18). Cyber Space Driver on Steam. Steam Store.
- Valve Corporation. (2025, September 27). Fast Finger Rule on Steam. Steam Store.
- Valve Corporation. (2025, November 17). Rover Mechanic Challenge - ERC Competition on Steam. Steam Store.
- Valve Corporation. (2025, December 1). Operation Satoshi [Early Version Alpha] on Steam. Steam Store.
- Valve Corporation. (2025, November 22). Mars Power Industries: First Job on Steam. Steam Store.