A Star System Generator for sci-fi campaigns. Generate full star systems on your scenes with orbiting planets, moons, asteroid belts, and a journal entry for every celestial body:
One-Click Star System Generation: Pick a star type, set your planet count, and the engine handles the rest. It places the sun with a dynamic light source, distributes planets across orbital bands (inner, habitable, outer, remote), rolls properties for each one, and scatters asteroid belts. The scene skybox, grid, and dimensions are all configured automatically.
Live Orbital Animation: Planets and moons orbit in real-time. The animation runs locally on each client for smooth performance, with periodic position syncs from the GM to keep everyone aligned. You can adjust speed from 0.1x to 10x, toggle asteroid belt animation, and configure how often positions sync.
Procedural Planet Properties: Each planet gets rolled stats based on its type and orbital band: size, gravity, temperature, atmosphere, water coverage, resources, hazard level, and life (from None up to Intelligent). You get lush worlds in the habitable zone and frozen rocks out on the rim.
Journal Integration: A Journal Entry is created automatically for the star system, with a page for each planet and the star. Transparent map pins sit over each planet so players can click to read the stats. Adding or deleting planets with the editor updates the journal to match.
Star System Editor: Swap the skybox live, adjust the sun's brightness and color, or manually place and delete planets on the canvas. You can pick the planet type, size, and individual moon types before clicking to place.
Generator Conditioning: Force a minimum number of habitable worlds or gas giants, or leave it on auto and let the tables decide. Useful when you need a system that fits your story.
Visuals: Multiple skybox themes, five star types (blue, white, yellow, orange, red) with variations, 15+ planet types across rocky, temperate, water, exotic, and gas giant categories, plus asteroid belts with optional jitter animation. It's completely system-agnostic. Whether you're running Starfinder, Stars Without Number, Traveller, Mothership, or a homebrew setting.
Art Credits: Skyboxes by whynomakethings, Suns by Viktor Hahn, Asteroids by Lazy_Nomad_31, Planets by Screaming Brain Studios