🏰 Dungeon Forge

▶ Play the live demo · by @majidmanzarpour

A deterministic procedural dungeon generator you can watch build itself, room by room. Rooms are scattered and shoved apart, triangulated, wired into a corridor graph, carved into a tile grid, and dressed with theme-specific props, liquids, lights, and particles — every stage seeded from a single number, so any seed rebuilds the exact same dungeon. Rendered live with Three.js.

Type a seed, pick a theme, drag the sliders, and watch the pipeline light up stage by stage. Every forge is reproducible and every dungeon is guaranteed fully connected.

✨ Features

• One seed, one dungeon. A single mulberry32 stream is threaded through every stage — scatter, separation, triangulation, room roles, carving, decoration. The same seed always yields the same map, down to the last torch. Change one digit and get an entirely new floor.
• A real generation pipeline, visualized. Watch it run: scatter → separate → Delaunay → MST + loops → semantics → carve → rasterize + BFS → decorate. Each step lights up in the HUD as it happens, and you can scrub the whole build animation or skip it.
• Graph-based layouts. Rooms are Delaunay-triangulated, reduced to a minimum spanning tree for guaranteed connectivity, then selectively re-looped so the dungeon has shortcuts and cycles instead of a boring spanning-tree spider.
• Room semantics. A BFS from the entrance assigns depth and difficulty, then tags rooms as entrance, combat, elite, treasure, shrine, or boss based on where they sit on the critical path — so the layout reads like a real level, not just connected boxes.
• Five hand-tuned themes (plus AUTO, which picks one from the seed): Ancient, Molten, Frost, Grim, Verdant. Each swaps the palette, lighting rig, liquids (lava / water / miasma), props, particle system (embers / snow / spores / wisps), and torch color.
• Procedural everything. Stone, cracks, runes, portals, and light shafts are all generated to canvas textures at load; geometry is built from primitives; nothing is loaded from disk.
• Instanced rendering. Thousands of floor tiles, walls, props, and decorations are drawn with InstancedMesh, so an 80-room dung