A hard sci-fi colony strategy game set in the real TRAPPIST-1 system. Mine, manufacture and build across hex-mapped planets, plan cargo runs on true orbital trajectories, and scan for rival expeditions hiding in the dark. No fleet battles. In space, physics is your weapon.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are 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?

“TRAPPIST-1 is an ambitious space-colonization simulation built around the challenges of establishing a human presence in another star system. We want to build a game where planetary environments, resource extraction, industrial production, and interplanetary logistics form a connected system — one where the survival and growth of a colony depend on the infrastructure it builds and the resources it can secure.

Developing a simulation of this scope involves many interconnected systems, and we believe the game will benefit from being shaped by the people who play it. Early Access will allow us to gather feedback, identify problems, refine the balance of the simulation, and prioritise the features that matter most to players.

Our goal is to develop TRAPPIST-1 into a deeper and more complete colonization experience over time. We intend to be transparent about the game's current limitations, share progress as development continues, and use community feedback to help guide its evolution.

We are building this game for players who enjoy complex systems, meaningful logistical decisions, and the challenge of turning an inhospitable alien world into a functioning human settlement.”

Approximately how long will this game be in Early Access?

“We expect TRAPPIST-1 to remain in Early Access for approximately 2–3 years. This will give us time to expand the simulation, improve the balance and interdependence of its systems, incorporate community feedback, and develop the game toward our intended scope. The timeline is an estimate, and we will prioritise delivering a stable, satisfying experience over meeting an arbitrary release date.”

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

“The full version of TRAPPIST-1 will build on the core colonization and resource-management simulation available in Early Access.

During Early Access, we plan to refine the existing systems, improve stability and performance, and expand the interactions between resource extraction, industrial production, infrastructure, colony development, and environmental hazards. Community feedback will help us identify which areas need the most attention.

Our goal for the full release is a more complete and cohesive simulation in which the different stages of establishing and developing a human presence in the TRAPPIST-1 system are connected by meaningful logistical and economic decisions. We also intend to improve the presentation, usability, and overall depth of the experience as development progresses.

The exact scope will depend on development priorities and player feedback. We will communicate significant changes to our plans throughout Early Access, and we will aim to make the transition to full release when the game delivers a stable and satisfying experience consistent with our vision.”

What is the current state of the Early Access version?

“TRAPPIST-1 is currently in active development, with its core simulation systems being built and integrated into a playable colonization experience.

The game is focused on the challenges of establishing a human settlement in the TRAPPIST-1 star system. Its simulation is built around resource extraction, industrial production, infrastructure, material logistics, colony development, and the environmental challenges of operating on alien worlds.

The Early Access version will provide the foundation for this experience, allowing players to begin developing a colony and engage with the interconnected systems that support its growth. The simulation is still evolving, and some systems may be incomplete, require balancing, or lack the depth planned for the full release.

Players should expect an unfinished game that will change throughout development. We intend to use Early Access to improve stability, refine existing mechanics, expand the simulation, and incorporate community feedback as we work toward the full vision for TRAPPIST-1.”

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

“Yes. We expect the price of TRAPPIST-1 to increase upon full release as the game expands in content, depth, and overall scope. Players who purchase the game during Early Access will receive the full game, including subsequent updates, without having to purchase it again.”

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

“Community feedback will be an important part of TRAPPIST-1's development throughout Early Access.

We plan to use player feedback to identify bugs, improve usability, balance the simulation, and understand which systems offer the most engaging decisions and which need further work. We are particularly interested in feedback on the relationships between resource extraction, industrial production, infrastructure, logistics, and colony development.

We intend to engage with players through the Steam Community discussions, review feedback and bug reports, and share development updates as the game evolves. Where practical, we will use this feedback to prioritise improvements and refine existing mechanics.

TRAPPIST-1 has an ambitious long-term vision, and community input will help us realise it. While not every suggestion can be implemented, we aim to communicate openly about development priorities and make the Early Access process a genuine opportunity to improve the game together.”
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Planned Release Date: To be announced

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About This Game

Forty light-years from Earth, seven rocky worlds circle a dim red star.

You are the first expedition to reach it. Or so you think.

TRAPPIST-1 is a hard-science strategy game about settling a real-life star system, TRAPPIST-1. Build industry on the surface, move cargo between worlds on real orbital trajectories, survive the harsh worlds of the system, and stay ahead of rival expeditions.

Two games, one economy

On the ground, you lay out mines, factories, depots and launch sites across hex-mapped planets, linked by road, rail and maglev. In orbit, you plan the transfers that carry what you build where it is needed. Neither half works without the other: a spacecraft is only as good as the supply chain behind it, and a colony is only as good as the launch windows it can reach.

Real orbits, real choices

The planets orbit as they do according to real-world observations, and every transfer obeys orbital mechanics. You don't need to do the math yourself, but for each journey the orbital planner offers three routes: efficient, balanced or fast. As in real-life space missions, you choose what to spend, fuel or time.

A system to discover

What you know is what you have scanned, from orbit or with teams on the ground. Other expeditions may be out there, and they can hide, watch and wait just as you can. Your first decision carries weight: commit to a landing site and start building now, or spend precious time surveying the perfect starting location. A colony with no raw materials dies on the vine.

Space is the enemy

TRAPPIST-1 is hard sci-fi. No alien fleets, no space battles. The danger is the star's flares, the cold, the distance, and a colony that runs out of life support. Rivalries are fought with drone swarms, kinetic impactors and countermeasures, not battleships.

Key features

  • Colonize seven worlds based on the real TRAPPIST-1 star system

  • Surface industry and orbital logistics form a single connected economy

  • A different system every playthrough: planetary properties, resources and the presence of microbial life all vary

  • Scanning, stealth and incomplete information make concealment and exploration matter

  • Public order and colony ethics that shape how much your people produce

  • Single-player against the elements, or against rival AI expeditions,

  • A goal to take humanity beyond: Assemble an interstellar mission to the next star

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

This game is made by a solo developer who uses generative AI tools as part of production. AI tools were used to help create 3D models, some in-game text and music, which were then reviewed and edited by the developer. AI coding assistants were used in programming. The game's design, systems and creative direction are the developer's own. No content is generated by AI while you play.

System Requirements

Windows
macOS
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: Intel Core i5-8250U or AMD Ryzen 5 2500U (4 cores)
    • Memory: 8 GB RAM
    • Graphics: Intel UHD Graphics (11th gen or newer) or AMD Radeon Vega 8, with Vulkan support
    • Storage: 1 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 (64-bit)
    • Processor: Intel Core i5-12400 or AMD Ryzen 5 5600 (6 cores)
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GTX 1650 or AMD RX 570, 4 GB VRAM
    • Storage: 1 GB available space
    Minimum:
    • OS: macOS 12 Monterey
    • Processor: Apple M1
    • Memory: 8 GB RAM
    • Graphics: Apple M1 integrated
    • Storage: 1 GB available space
    Recommended:
    • OS: macOS 14 Sonoma or newer
    • Processor: Apple M2 or newer
    • Memory: 16 GB RAM
    • Graphics: Apple M2 integrated or better
    • Storage: 1 GB available space
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