Orbital Frontier

Build a rocket from parts, launch it, and fly it under real orbital mechanics, in one solar system shared by every player.

Orbital Frontier is a 2D space game about rockets that behave like rockets. Every ship follows a real orbit, worked out from physics rather than faked. The world never pauses: close the app and your satellite keeps circling, your transfer keeps coasting, and everyone else's ships are still up there with yours.

BUILD FROM PARTS
• 65 parts: tanks, engines, capsules, fairings, wings, docking ports, solar panels, antennas and more
• Stretch tanks by dragging; mass and price come from the shape you build
• Two stack diameters with an adapter between them, mirror symmetry and a staging list
• Engines are rated at sea level and in vacuum, so the right nozzle matters

FLY REAL ORBITS
• Patched conics, maneuver nodes and encounters with other ships
• Atmospheric drag, re-entry heating, landing legs, parachutes and wings that glide
• Time warp in sandbox, and reminders that wake your phone before a burn in the shared world
• Rendezvous, dock and undock; move crew, fuel and power between docked ships

ONE SHARED SOLAR SYSTEM
• 29 worlds: a star, 11 planets and 17 moons, at their real relative distances
• One world server and one clock for everyone, running while the app is closed
• Your fleet lives on the server, not in a save file: pick it up on another device

RUN A SPACE PROGRAMME
• Launching costs credits; recovering a ship on the ground refunds what came back
• 105 contracts and a 64-mission campaign that tells you what to fly next
• 46 tech nodes bought with discovery, earned by surveying new places and reaching points of interest
• 178 achievements
• Hire the Meek: astronauts, scientists and engineers who black out under too much G, grow with every flight home, and write a diary of it

PLAY YOUR WAY
• Sandbox is free: fly anything, anywhere, with no sign-in
• The Online Pass subscription opens the shared multiplayer world, with a 7-day free trial. One Pass works on every device you sign in on
• Optional Seed Money packs add credits to your programme

Built for phones: every control works under a thumb, in portrait.