Cepheus UWP - star-system generator

Create original star systems, sector maps, and worlds for Cepheus Engine and other 2d6 science-fiction roleplaying games in your browser.

Generate a sector hex chart with starports, trade routes, and world profiles. Explore stars, planets, and moons, edit a Universal World Profile (UWP), and share a chart using its seed and link.

The interactive charts use JavaScript and WebAssembly. The 3D planet and system views also use WebGPU; the 2D sector chart works without it.

An independent, unofficial tool by Total Reality Engineering. Source code and documentation.