Screenshots
Watch trailer on Steam ↗Orbit One
Specific Impulse Interactive · Published by Specific Impulse Interactive
4 user reviews — 75% positive (4 reviews)
Last updated 28 Sept 2026
Take to the stars and explore the solar system. Master the orbital mechanics of N-body physics. Plot a careful course to complete your mission.
£13.75
Lowest price we've ever recorded
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Price history
Indie, Simulation, Strategy · 2026 · More £5 - £15 games
About this game
Orbit One is a game about planning. Plan your rocket designs, plan your launches, and plan your orbital maneuvers. With careful planning, even the most difficult, far-flung space exploration becomes achievable.
Start from humble beginnings and build your skills by designing simple rockets to maneuver around Earth. Demonstrate your competency with orbital maneuvering to unlock more powerful rockets with sophisticated scientific instruments. Follow your ambition to explore every part of the solar system!
Master orbital mechanics, face unstable orbits, and take advantage of Lagrange points. Orbit One's N-body physics provides a more accurate simulation than standard 2-body approximations. Orbit One's planning tools make it easy to plan and coordinate maneuvers across multiple spacecraft.
Reaching orbit has never been simpler! Use the vehicle designer to create the perfect design to fulfill your mission. Select from engines and specialized modules, adjust tank sizes and staging, and tweak the performance to meet mission requirements.
Tired of flying manually? In Orbit One, the details are taken care of: launches, landings, and maneuvers are all automated. It's up to you to manage the orders for multiple spacecraft and plot an efficient, timely course.
Travel to the Moon, Mars, and beyond! Explore the moons of Jupiter, Saturn, and Uranus, or visit Neptune's icy satellite Triton.
Play through the missions to unlock larger, more powerful, and more sophisticated rocket parts. Each mission will take you further, exploring the planets and moons of the solar system. Take on real-life scenarios to test your skill. Or skip the wait and jump straight into sandbox mode and explore at your own pace.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 11
- Processor: 3GHz
- Memory: 8 GB RAM
Recommended
- OS: Windows 11
- Processor: 4GHz
- Memory: 16 GB RAM
Supported Languages
Latest news
AnnouncementsOfficial
Orbit One: Why and How
For gamers interested in realistic spaceflight there are plenty of options. Games like Kerbal Space Program and Juno: New Origins offer an engaging experience building and flying rockets (and non-rocket machines). So why make Orbit One? There are a few differences:Exploration set in our solar system.Quicker and easier rocket design and maneuver execution.More realistic orbital mechanics.Let's break down how Orbit One approaches each point.Exploration set in our solar systemExisting games are mostly set in fictitious solar systems. This is a sensible design choice, as it allows game developers to provide a smoother difficulty curve. Starting with orbiting the home planet and visiting increasingly difficult moons and planets, each of which can be imbued with its own characteristics.While this approach does make for good gameplay, it comes at the cost of realism. For players interested in a more realistic, grounded experience, Orbit One is set in our solar system. Surfaces of planets and moons are based on real imagery*. In some cases, the roughness of planets and moons is also known.*Only the southern hemisphere of the moons of Uranus and Neptune have been photographed, so the northern halves of these moons is fictitious. Streamlined rocket design and maneuver executionIf you're like me, you've spent a lot of time building rockets by snapping together pieces, adjusting symmetries, and defining staging plans. You have also spent a lot of time waiting for a launch or maneuver to complete, and have perhaps turned to mods to automate these processes. A Lego-like building experience is a lot of fun, and manually flying your creations is very rewarding (even, or especially, when they explode).That being said, successful rocket designs do follow a similar pattern of stacked stages and possibly boosters. Launches typically follow the same pattern (1: go up; 2: go sideways). Maneuvers are mostly an exercise of pointing in the right direction and firing engines at the right tim...Read full article on Community Announcements (stewart.w.stephens)
