gen-biome
Procedural generation of 2D maps with distinct biomes
simplex-noise
simplex-noise is a fast simplex noise implementation in Javascript. Works in node and in the browser.
fastnoise-lite
FastNoise Lite is an extremely portable open source noise generation library with a large selection of noise algorithms
maze-generation
A package to generate mazes using the depth first or hunt and kill algorithm. Mazes can be generated with seed values for reproducibility