Burn Window

Want to be an astronaut? Learn real orbital mechanics one swipe at a time: escape a planet, catch a transfer window, slingshot past giants and circle a binary sun.

Want to be an astronaut? Then you need to know some orbital mechanics, and it's hard.

Burn Window is a space flight game with real Newtonian gravity. Every planet pulls on your ship, every burn costs fuel, and nothing moves in a straight line. Swipe in the direction you want to push: the ship turns to face it and fires its engine, and a longer swipe means more thrust.

Start small. Leave an orbit. Get into orbit around another planet. Then cross a whole solar system, using slingshots past gas giants to reach Haven, where Home Base waits.

TEN LEVELS • Liftoff: break free of your first planet • Crossing: fly to a small world and settle into orbit around it • First Hop to Slingshot: transfer between planets around the star Lumen, with gas giants that can fling you onward or swallow you • Inner Sanctum and Twin Giants: deep dives and double flybys • Binary Sun: two suns circling each other, and a pull that never sits still

LEARN AS YOU FLY • The blue line shows exactly where you'll go if you stop burning • Green and red ticks show which way speeds you up and which slows you down • A countdown tells you when the burn window opens, the moment to leave for the most fuel-efficient trip • A ghost planet shows where your target will be when you arrive • Watch a demo to see how swiping works

FEATURES • Easy, Medium and Hard: more or less fuel on every level • Time warp and a one-minute skip for long coasts • A synthesised engine rumble and sound effects • No ads. No accounts. No data collected. Works offline.

New burns coming: more levels and missions are on the way.

Catch the window. Fly home.