How Keep Orbit works
Keep Orbit is a small gravity survival game you play in the browser. A planet sits in the middle of the canvas. Around it is a thin green orbital band. Your ship starts near that band. The clock only runs while you stay inside the green. Drift inward and you hit the planet. Drift outward and you leave the map. Either way the run ends. There is no level list and no story screen. One ship, one band, one timer.
Fuel is the real constraint. Hold on the canvas (or hold Space) to thrust toward your pointer. While you burn, the tank drops. Release and it refills. Long burns look safe and then leave you empty at the worst moment, so short taps work better than holding the button down. Arrow keys and WASD change facing; the pointer still sets the thrust direction if you are using a mouse or a finger.
Controls
Press Start or Enter to begin. Hold on the playfield to thrust; release to refuel. Arrow keys or WASD steer. Space pushes outward. Enter or P pauses and resumes. On a phone, one finger on the canvas is enough. The run pauses if you switch tabs. Points are one per full second spent in the green band. Finish & save writes the run to this browser only.
How it differs from other orbit games
This is not a clone of a lunar lander, and it is not a wrap-around Asteroids field. There is no docking port, no mission briefing, and no upgrade tree. The only score is time in the band. The physics are original canvas code on this site, not an embed from a game portal. No account, no download, no ads on the page. If you have played browser gravity toys that fling a probe at a target, this one asks you to stay, not to arrive.