Neat, yes, but when you do procedural generation from local information only, you often get artificial looking "dungeons". Though, it does make me curious abou

Neat, yes, but when you do procedural generation from local information only, you often get artificial looking "dungeons". Though, it does make me curious about what extending this to use a "hierarchical" tileset might do. For example, start with large tiles that define a probability distribution. Tile those. Use that to initialize the probability distribution for the smaller tile generation.