What Is donjon; RPG Tools?
donjon; RPG Tools (donjon.bin.sh) is a free website that hosts a large collection of random generators for tabletop role-playing games. It is built for game masters and players who need to create names, worlds, dungeons, encounters, treasure, and other campaign content on the fly. The tools cover Dungeons & Dragons across several editions as well as other systems such as Pathfinder, Call of Cthulhu, Avatar Legends, and Traveller.
What the site offers
The homepage organizes its tools by game system and genre. Each generator produces randomized results you can reroll until something fits your campaign.
General and fantasy tools
- Markov Name Generator — generates random names using your own source lists.
- Fractal World Generator — produces a random world map.
- Random Weather Generator — generates weather from clear to storms.
- Fantasy Name Generator — random names for characters.
- Fantasy Calendar Generator, Fantasy World Generator, and Medieval Demographics Calculator.
- My Random Campaign and Random Adventure Generator.
- Treasure Map Generator, Random Dungeon Generator, and Five Room Dungeon Generator.
- The Endless Oubliette, Random Inn Generator, and Random Town Generator.
System-specific generators
| System | Example tools |
|---|---|
| AD&D | Random Dungeon, Five Room Dungeon, Random Magic Shop, Random Treasure |
| d20/Fantasy | Initiative Tracker, Power Attack Calculator, Random Encounter, XP Calculator |
| Microlite20 | Random Monster, Random Dungeon |
| Pathfinder | Power Attack Calculator, Random Dungeon, Random Encounter, Random Magic Shop, Random Treasure |
| D&D 4e | Random Dungeon, Random Encounter, Random Treasure |
| D&D 5e | Quick Reference, Spell Sheet, Monster List, Magic Items, Encounter Size Calculator, Initiative Tracker, Random Dungeon, Five Room Dungeon, Random Encounter, Random Magic Shop, Random Treasure |
| D&D 5.5 | Quick Reference, Spell Sheet, Monster List, Magic Items, plus the same random generators |
| Call of Cthulhu | CoC NPC Generator |
| Science fiction | SciFi Name Generator, SciFi World Generator, Star System Generator, Traveller System Generator, SWd20 Freight Jobs, SWd6 System Generator |
| Other | Avatar Legends Name/NPC Generator, RWBY Team Generator, Weird Name Generator, Blade Runner Name/Case/NPC Generator |
Who it is for
- Game masters preparing a session who need an inn, a town, a dungeon layout, or a random encounter without hours of prep.
- Players who want a quick character name or a random treasure roll.
- Worldbuilders using the Fractal World Generator or Medieval Demographics Calculator to sketch a setting.
- Groups playing non-D&D systems such as Pathfinder, Call of Cthulhu, Traveller, or Avatar Legends.
How to use it
- Open donjon.bin.sh and pick the genre or game system from the homepage.
- Choose the generator you need (for example, Random Dungeon under D&D 5e).
- Adjust any options the generator exposes, then run it.
- Reroll or tweak the output until it fits your campaign.
Most generators are one-click tools: you select the system, open the generator, and it returns a result you can reroll. No account is required to browse the site.
Practical notes
- The site also links to a Site Index, Code Library, Download Apps, and a Random Dungeon Wallpaper collection.
- A Dark Mode option is available.
- The site is supported through Buy Me a Coffee and Patreon links, which indicates voluntary support rather than a paywall; the generators themselves are presented as a free resource.
If you run tabletop games and want random content without installing anything, donjon; RPG Tools is a straightforward place to start.