01
Build
A grid that understands mass, fuel paths, staging, aerodynamics, docking, hinges, rovers, and fairings.
A 2D orbital mechanics sandbox
BUILD SMALL.
FLY FAR.
Design rockets part by part, lift from a full-scale Earth, and navigate exact orbits through the real solar system.
Independent. In active development. Your saves and creations stay local unless you publish them.
SCALE1:1Real astronomical system
WORLDS83From Earth to Arrokoth
WARP10⁶×Exact-orbit propagation
VIEWSFLT / MAPOne continuous simulation
One simulation, end to end
No miniature planets. No patched-together flight modes.
Rocket Foundry keeps authoritative physics in double precision, then renders the result through Godot. Coasting craft follow exact conics; powered flight, atmosphere, contact, and thermal systems step numerically.
02
Fly
Point-mass simulation where it matters, analytic Kepler rails when it should. No orbital drift disguised as gameplay.
03
Explore
Earth to Arrokoth at real scale, with atmospheres, terrain, surfaces, structures, EVA, and persistent vessels.
Made for experimentation
A rocket lab, not a level select.
Build stations, aircraft, cranes, rovers, launch escape systems, programmable missions, or a glorious engineering mistake. The same rules apply to all of it.
Parts, bodies, structures, and visual systems are data-driven. The in-game mod tools let you reshape the foundry without rebuilding the engine.
The beta is live
Your first orbit starts on Discord.
Download current Windows and Android builds, see development notes, and help decide what gets built next.
Join the foundry