Dungeonizer is a random dungeon & level generator script for Unity. It’s working much simpler than other generators, also its very hackable if you know your way around codes (totally optional), you can easily create tile based 2D or 3D RPG dungeons using this add-on. Custom room support added. You can create custom rooms in any position of dungeon. New: Check out this awesome Dungeonizer tutorial from John McGarey Tileset included in package is free to use for Dungeonizer customers Complete population of mobs, chests, doors, goals – whatever you want, automatically!

Here is the tutorial: