A Random Dungeon Map Generator is an online tool that automatically creates RPG-style dungeon floor plans. It uses procedural generation algorithms to place rooms, corridors, and doors, producing a unique battle map every time. These generated dungeon maps are perfect for tabletop RPGs like D&D, Pathfinder, or any fantasy role-playing game where you need quick, ready-to-use dungeon layouts for encounters and exploration.

Our generator uses a multi-step procedural algorithm: First, it randomly places non-overlapping rectangular rooms across the grid. Then it computes a Minimum Spanning Tree (MST) using Prim's algorithm to ensure all rooms are connected with the shortest possible corridor network. Optionally, it adds extra loop corridors for more complex, non-linear layouts. Finally, doors are placed at room-corridor junctions, and special rooms (entrance, exit, treasure) are assigned. The entire process is deterministic based on a seed value, so you can recreate any map by reusing its seed.

Absolutely! All maps generated by this tool are royalty-free and can be used for personal tabletop RPG sessions, D&D campaigns, Pathfinder adventures, online VTT platforms (like Roll20 or Foundry), and even commercial projects. You can export the map as a high-resolution PNG image and import it directly into your virtual tabletop software or print it for in-person sessions.

Each color represents a different room type to help you quickly plan encounters: Green marks the dungeon entrance (where players start), Red indicates the exit or a boss room, Gold/Yellow highlights treasure rooms with valuable loot, and standard beige/cream areas are regular rooms and corridors. Doors are shown in warm orange-brown at the junctions between corridors and rooms. The legend below the map provides a quick reference.

You can export your dungeon map by clicking the Export PNG button, which downloads the map as a high-quality PNG image file. You can also use the Print button for a physical copy. Additionally, every map has a unique Seed number displayed above the canvas — click it to copy, and you can paste it into a note to regenerate the exact same map later by manually entering that seed value.

A seed is a numeric value that initializes the random number generator used to create the dungeon. Because the algorithm is deterministic, the same seed always produces the identical dungeon layout. This is incredibly useful for sharing maps with friends, recreating a favorite layout later, or integrating into campaign notes. Simply copy the seed number, and when you want that exact map again, paste it back and hit Generate.

Yes! The control panel offers multiple customization options: Grid Size adjusts the overall map dimensions (from 25×25 to 55×55 tiles), Room Count controls how many rooms appear, Room Size affects individual room dimensions, Extra Loops adds alternative paths making the dungeon less linear, and Theme changes the visual style (Classic Dungeon, Dark Cavern, Ancient Castle, or Forgotten Ruins). These options let you tailor each map to your specific adventure needs.

Yes, the tool is fully responsive and works on smartphones and tablets. The control panel stacks vertically on smaller screens, and the canvas scales to fit your device width. You can generate, customize, and export dungeon maps on the go — perfect for last-minute game prep or spontaneous RPG sessions away from your desk.