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.
Change your orbit altitude from 400 km to 800 km using a Hohmann transfer. Learn how to efficiently raise your 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 to make perfect circular orbits by matching your periapsis and apoapsis. This essential skill is needed for stable orbits and rendezvous.
Establish a Molniya orbit, a highly elliptical orbit used for communications in high-latitude regions. This orbit provides long dwell time over the northern hemisphere.
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 tiny golden spark that represented his spacecraft fell away from the green disk of the departure world, inward toward the yellow sun about which all revolved."
— Vernor Vinge, The Peace War (1984)