Buy freight, plan a route, and sell it by its deadline. Clear 90,000 credits of ship debt within 120 days. Keep enough cash to buy the next tank of fuel. Ship operations cost 600 credits per day, including departure waits.
More cargo means more propellant. Fuel costs more at low Earth stations. The sale price is fixed; late delivery reduces it by 22% per day, down to 12%. A refused route stays at the dock. An edited route may miss; re-plan from your position, or pay for rescue.
Plan for me computes finite burns. Expand Manoeuvre nodes to edit their timing and prograde, radial or normal components. The dashed path and closest approach update from those burns. Docking requires 2 km and less than 5 m/s relative speed; the final metres are abstracted.
Select a labelled station in the scene or use Ports to choose a destination. Load freight, plot its route, depart, then advance each actual burn or docking event. Controls opens the full market, fuel, ledger and node editor. Camera: drag the scene, use its arrow keys or the framing buttons. The view stays fixed until you change it. Optional follow translates with the ship; it never rotates or zooms. With the scene focused, Space pauses or resumes a flight. All trade, flight and node actions have labelled controls.
Gravity funnel: a dim potential illustration, not physical height. Earth and Moon radii and all orbital coordinates are true scale. Ship and station locator symbols are enlarged for readability; they do not represent object size. Earth–Moon restricted model, station-kept ports, no atmosphere or Sun's tide. Physics and limits. Earth/Moon textures: Solar System Scope, CC BY 4.0. Provenance. Luke Steuber, 2026.