Orbit Keeper
Fire thrusters to keep your satellite in the stable zone.
Controls
- › Hold SPACE or CLICK to fire thrusters (pushes outward)
- › Keep the satellite in the green zone for 30 seconds
- › Don't crash into bodies or drift too far out
About Orbit Keeper
An orbit isn't a fixed path — it's a balance between a satellite's forward momentum and the pull of gravity, and this game makes that balance genuinely unstable by letting the gravitational field grow chaotic across 8 increasingly difficult levels. Fire thrusters at the right moments to correct course before the satellite either spirals into the planet or flies off into space.
Timing matters as much as thrust strength — a correction applied at the wrong point in the orbit can make the instability worse instead of fixing it, the same tradeoff real satellite operators manage. Curious about the real planets this orbital math applies to? See the planet fact sheets.
Keep Exploring
More on gravity and orbital mechanics