Welcome to Orbital Frontier

You build rockets out of parts, fly them on real orbits, and climb from a hop over the pad to the far moons of one shared solar system that never stops turning. This is the manual.

What the game is

Every player flies in the same solar system on the same clock. A ship you leave in orbit tonight is still there tomorrow, further along its orbit, and a ship you left tumbling is still tumbling. Nothing you do pauses the world, and nothing anybody else does moves your ships.

The game runs on credits and discovery. Every launch costs the rocket's price the moment its first engine lights, and bringing a rocket home whole refunds what came back. Feats earn both currencies: reaching a height, landing somewhere new, testing a part for a company. Credits buy launches, buildings and crew. Discovery buys tech nodes, and tech nodes are new parts. The ladder is the same for everyone: a hop, an orbit, the Moon, Mars, and beyond, and each rung needs a rocket the last one could not build.

The rockets are honest. An engine pushes harder in vacuum than at sea level, a wing lifts on a real curve and stalls, air heats a hull, and the ground is hills and slopes that a rocket can tip over on. None of that is hidden: the hangar shows the figures, and this manual explains them.

Where to start

Getting started
Install and sign in
Get the game, what your account holds, and what follows you between devices.
Guide · 10 min
Your first flight
Fly the starter rocket, open the chute, land, recover, and earn your first credits.
Getting started
The screens
Hangar, Space Center, flight and map: what each is for and how to get between them.
Guide
Reaching orbit
A two-stage rocket, a bigger pad, a gravity turn, and an orbit that does not come down.
Guide
Coming home from orbit
The retrograde burn, the glow of re-entry, the chute, and the refund.
Reference
Parts
Every part's figures as the info card shows them, one entry each, by palette category.

How the manual is organised

Every page is one of four kinds, and the sidebar groups them:

SectionAnswersRead it when
Getting startedWhat is this, and how do I begin?First hour
How the game worksWhy does it behave like that?Something surprised you
How do I…How do I do one specific thing?Game open, thumb hovering
ReferenceWhat are this part's figures?Planning a rocket
HelpQuick answers and the wordsAny time

The search box at the top looks through every page; press / on a keyboard to jump to it. Figures in the manual are read from the game's own data and checked against the version in the header chip.

Note
The manual is being written in batches. Pages that are not in the sidebar yet are not written yet; what is there is checked against the game.