I01–10
Gravity
Steer past gravity wells, repulsors, walls, and ordered target rings.
Physics puzzle for iPhone & Android
Aphelion
Flick a comet through gravity wells, orbital maneuvers, atmospheric entries, three-body systems, and Saturn's rings across hand-built celestial puzzles.
100levels
10chapters
16locales
Ten chapters. One grand tour.
Each chapter adds a new piece of orbital physics.
II11–20
Flight School
Learn slingshots and settle into stable orbits around moving worlds.
III21–30
The Grand Tour
Ride gravity assists across the solar system, from the Moon to Pluto.
IV31–40
Ice Run
Collect every ice crystal in flight, then capture the destination.
V41–50
Ice Drop
Time cargo releases for moving depots while keeping the comet safe.
VI51–60
Maneuvers
Fire prograde and retrograde burns to reshape, raise, and lower orbits.
VII61–70
Atmospheres
Thread the entry corridor, balancing aerodynamic drag and heat.
VIII71–80
Balance
Navigate Lagrange points, Trojan ice, and binary-star systems.
IX81–90
Impact
Rendezvous with asteroids, redirect their paths, and defend Earth.
X · New91–100
Rings
Navigate Saturn's hazardous debris bands, divisions, and shepherd moons.