Real orbital mechanics. Pull back, aim, burn — and pray your gravity assist actually works.
The orbital puzzle game for people who want to fly across the solar system but only have five minutes.
Keplerian orbits, eccentric trajectories, SOI transitions. Not a cartoon — a simulation. Every burn costs delta-v, every gram of fuel matters.
Each crux is a self-contained orbital puzzle. Waiting for coffee? Nail a Hohmann transfer. On the bus? Try a two-burn gravity assist. No save files, no 40-hour campaigns.
Pull back to set your burn vector. Release to fire. Feels like Angry Birds, works like mission control. Your intuition is the flight computer.
Each mission is a single orbital problem. Pick one.
Learn how to change your orbital inclination. You're in an equatorial orbit and need to reach a polar orbit. This maneuver is crucial for satellite positioning and interplanetary transfers.
Learn the basics by circularizing your orbit around Earth. You start in an elliptical orbit and must perform a maneuver to achieve a stable circular orbit.
Understand the six cardinal directions in space: prograde, retrograde, normal, anti-normal, radial, and anti-radial. Learn how velocity changes affect your orbit.
Learn how different burns at different positions affect your orbit. Understand the fundamental principle: you change the opposite side of your orbit.
Execute a Hohmann transfer from Earth to Venus. Unlike Mars, Venus is closer to the Sun, requiring a different approach. Achieve Venus orbit insertion on a limited fuel budget.
Launch from Earth and dock with the International Space Station in its 51.6-degree inclined orbit. Time your launch window correctly and perform a precise rendezvous.
"The representation of the planet and the spacecraft merged for an instant, but did not record as a collision, for the tiny dot moved quickly away, going for the far reaches of the screen."
— Vernor Vinge, The Peace War (1984)