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.
Master the art of orbital rendezvous. You need to match orbits with a target spacecraft and approach within close range. This is essential for docking operations and space station visits.
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.
Deep dive into the two most important points in your orbit. Learn to use them strategically for efficient maneuvering.
Travel from Earth to the Moon and achieve a stable lunar orbit. Your first journey to another celestial body!
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.
Execute an OSIRIS-REx style mission to a near-Earth asteroid. Rendezvous with asteroid Bennu, match its velocity precisely, perform a touch-and-go sample collection, then return your precious cargo to Earth. Every gram of primordial material is priceless for science.
"The craft was accelerating now, falling into the gravity well of the destination, giving the tantalizing impression of success that always comes with a close shot."
— Vernor Vinge, The Peace War (1984)