3D Dungeon Generator vs Worldsmith

3D Dungeon Generator makes procedural, solvable room-and-corridor dungeons in a browser. It places rooms without overlap and connects them with carved corridors; users can adjust room count, room size, and corridor width. A seed and its settings can reproduce the same layout, including a route from entrance to exit, with optional extra corridor links. The real-time preview supports orbiting, a top view, fit controls, and first-person walking from the entrance. Themes include Stone, Backrooms, Dungeon, Concrete, Sci-Fi, and Hedge, and users can supply wall, floor, and ceiling textures. GLB export includes the dungeon geometry and current materials, with options for a ceiling and solution path. Custom texture support in exported GLB depends on browser image decoding. The tool is free at free, browser-based, and requires no signup or subscription. Dungeon sizes range from 16×16 presets to custom dimensions up to 60×60. LevelRift Labs lists uses such as game level prototyping, game jams, dungeon concepts, and Blender or other GLB-compatible workflows. The product page says original texture files are not uploaded by the app.

Worldsmith is a free, open-source browser application for generating fantasy world maps from a numeric seed, with a mode for rendering real Earth. Procedural terrain uses domain-warped fractal noise, including ridged mountain ranges, while biomes derive from elevation, moisture, and temperature. Rivers use D8 flow accumulation to form tributary drainage networks. Exports include PNG maps up to 5120 pixels, editable SVG maps up to 3840 pixels, JSON world data, and 8-bit or 16-bit heightmaps. The maker says heightmaps can be imported into Unity, Unreal Engine, Blender, and World Machine. Earth mode uses NOAA ETOPO1 elevation and bathymetry, averaged to about five kilometers per sample; synthesized detail is disclosed and can be disabled with Detail set to 0. The app runs entirely client-side without an account, server, or dependencies, and is offered under the MIT license.