orbit or bust
A free physics simulation — play it in your browser, no install. KSP-inspired 2D space program game in the browser: build rockets, fly real orbital mechanics, explode educationally. Pure JS + Canvas.
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Controls: A / D to steer · Shift / Ctrl: throttle up / down · Z / X: full throttle / cut
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Open the live demo Source on GitHubFrom the README
Build rockets. Fight gravity. Explore a tiny solar system. Explode educationally.
A Kerbal Space Program-inspired 2D space-program game that runs entirely in your browser — no installs, no build step, no dependencies. Pure JavaScript + HTML5 Canvas.
SAS, aerodynamic stability (no fins → your rocket will remind you), staging with jettisoned debris, parachutes with semi/full deploy, crash physics.
orbits, spheres of influence, analytic on-rails propagation up to 100,000× time warp, trajectory prediction across SOI changes, gravity assists, and maneuver nodes.
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