Survive and colonize Mars in a highly technical, open-world sandbox game. Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, and fix broken parts.
Recent Reviews:
Mostly Positive (30) - 73% of the 30 user reviews in the last 30 days are positive.
All Reviews:
Mostly Positive (1,665) - 72% of the 1,665 user reviews for this game are positive.
Release Date:
May 10, 2023

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“See our Roadmap. We decided to launch in Early Access because, we want to give our players a chance to play our game before we finish adding all of the additional things we envisioned to include in the final version.
Additional time will also allow us to put more effort into implementation of new mechanics and it will give us an opportunity to add an On-Line Co-Op mode as well as some modding features that we would love our game to have. We want this game to live and grow long after the initial release.”

Approximately how long will this game be in Early Access?

“We expect that Early Access phase will take approximately one or two years. We hope that it is enough time to polish the game and make it a high quality sandbox. However the game in its current state already offers loads of functionalities and long playtime.”

How is the full version planned to differ from the Early Access version?

“In the final version we want to add many functionalities which were unlocked during our Kickstarter Campaign, including an Online Co-Op mode. You can also visit our special Roadmap Website where you can find a detailed breakdown of our plans.”

What is the current state of the Early Access version?

“The Early Access release will feature a single-player Campaign mode with an introduction to the story as well as customizable FreePlay Sandbox mode where you can select your difficulty level, starting location, starting equipment, intensity of weather conditions and other parameters.

The continuation of the Campaign mode as well as an Online Co-Op mode will come to the game later in the form of updates.

We've decided to focus on polishing core functionalities first to make sure they are thoroughly tested and that the core gameplay and survival mechanics are well balanced.
Because of that decision, some of the features that were mentioned in the DevLogs might may be added after the initial release.

Available technology trees at early access launch: botany, electricity, materials, mechanics. The chemistry tech tree will be added later as an update. Some technologies in each tech trees are locked and will be added after early access launch.

Vehicles available to build in the game at early access launch: Old Quad, ATV Quad, Heavy Rover with 3 types of trailers.
The Motocross and MarsTruck still require some driving adjustments so they will be enabled later.

Available tools: Air compressor, Blowtorch, Grinder, Jackhammer, Seed Tool, Spectral Detector, Screwdriver, Detonator, Fire extinguisher, Remote controller, pipes, cables and various building materials.

Plants available to cultivate: Apple, Oxygen Tree, Poplar, Spruce, Pepper, Corn, Tomato, Potato, Lettuce, Cabbage, Pumpkin.

Buildings available to build in the game at early access launch: airlock, ramp, 2x flexible corridor joints, small solar panel, medium solar panel, transformer, transformer upgrade, battery, battery upgrade, lamp, 3x antennas, well, co2 scrubber, sabatier reactor, vertical tanks, horizontal tanks, pump, small rock crusher, big rock crusher / printer, greenhouse with hydroponics shelf, plant incubator, seed machine, composter, small dome, medium dome, large dome, workshop, living capsule, survival capsule, bathroom, various capsule adapters, lobby, cantina, main hab (hq) with equipment, food processing unit, small 3d printer, bed, fridge, 5x workbench types for different technologies, the garage (hangar), anti-meteor launcher, 9 types of corridors (long, short, with or without windows, 90 deg angle and crossroads.

Other available interactable objects include: The Ingenuity Helicopter drone, Radio, First Aid Kit, Helmet Repair Kit, spare helmets, Jetpack, solid fuel sounding rockets,

More objects, buildings and vehicles will be enabled in subsequent updates.”

Will the game be priced differently during and after Early Access?

“Although we are not currently sure about the final price of our game, most likely the early access version will cost less than the final product, in a similar way like other space sandbox games which were initially released in Early Access.”

How are you planning on involving the Community in your development process?

“We are creating this game with the community and for the community. Players are be able to express their ideas, opinions and suggestions for the game on the community forums, as well as our Discord server. A lot of community members have already influenced the game's direction during previous Beta periods and we intend to continue working closely with the community.”
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About This Game

Occupy Mars is a complex open-world sandbox survival game for fans of the genre.

Video Guide | Colonist FAQ | Troubleshooting FAQ | Wiki | Roadmap | TightBeam | Discord

Occupy Mars is a technical, open-world sandbox, survival game about Mars colonization inspired by the most promising technologies and companies that are working towards the goal of humanity becoming a multi-planet species.

Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, fix broken parts, and learn how to survive on Mars!

Build and upgrade your base. Make sure that there is enough water, oxygen, power, and food to survive.

Build greenhouses, oxygen tanks, fuel generators, connect all the pipes and cables, and remember about proper cable management. Grow your own food.

Fix broken parts using realistic electronic components and tools. Learn the basics soldering, using hot air, electronic measurement tools, and all the details necessary to fix your equipment.

Explore different regions of Mars while searching for valuable resources, discover mining sites, and find the best place to build a city.

Remember that you need to find a relatively leveled area with good access to underground water in a place where temperatures don't drop too much during the night.

Experience an open-world sandbox game with a realistic day/night cycle and overcome real challenges that colonists face. Build solar arrays and batteries for energy storage, upgrade them, and find the optimal way to power your colony.

Upgrade your vehicles and equipment in your garage. Organize your workshop and modify your rover. Change crane hydraulics, operate the robotic arm, dig for valuable resources, build mining rigs, and more...

Occupying Mars is not always easy. Sometimes things will explode, break or not go exactly as planned. Learn to cope with "Rapid Unscheduled Disassembly.” Sometimes you have to really act quickly before you run out of air, food, or energy.

...but most importantly HAVE FUN on Mars!


Our previous game Rover Mechanic Simulator set in the same Occupy Mars Universe:

System Requirements

    • OS: Windows 10
    • Processor: Intel Core i5-6400 / AMD Ryzen 5 1500X
    • Memory: 8 GB RAM
    • Graphics: RX 570 4GB VRAM / GeForce GTX 970 4GB VRAM
    • DirectX: Version 11
    • Storage: 15 GB available space
    • Sound Card: DirectX compatible
    • Additional Notes: System requirements may change during the development of the game.
    • OS: Windows 10
    • Processor: Intel Core i5-6600K / AMD Ryzen 5 2600X or better
    • Memory: 16 GB RAM
    • Graphics: GeForce GTX 1070 8GB VRAM or better
    • DirectX: Version 11
    • Storage: 20 GB available space
    • Sound Card: DirectX compatible
    • Additional Notes: System requirements may change during the development of the game.

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