Open Dungeon Master
Free multiplayer D&D 5e app with app-enforced rules, where an AI or human runs the table using a local model, API key or CLI agent.
Updated
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About Open Dungeon Master
Open Dungeon Master is listed in our games category and is aimed at people who want a ready-to-use product. Free multiplayer D&D 5e app with app-enforced rules, where an AI or human runs the table using a local model, API key or CLI agent. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-16.
What is Open Dungeon Master?
Open Dungeon Master runs multiplayer D&D 5e campaigns with an AI Dungeon Master on a local model, an API key or a CLI agent subscription you already have (Claude Code, Codex), or with a human DM.
Our listing notes it is free and that the app enforces the rules.
Sources: the official site and our directory listing, checked 2026-10-18. Official site: opendungeonmaster.com.
Who is Open Dungeon Master for?
D&D groups who want an AI or human DM with rules enforcement.
Key features
- Multiplayer D&D 5e
- Local model, API key or CLI agent
- App-enforced rules
Open Dungeon Master FAQ
What is Open Dungeon Master?
Open Dungeon Master runs multiplayer D&D 5e campaigns with an AI Dungeon Master on a local model, an API key or a CLI agent subscription you already have (Claude Code, Codex), or with a human DM.
Who is Open Dungeon Master for?
D&D groups who want an AI or human DM with rules enforcement.
Is Open Dungeon Master free?
Open Dungeon Master's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
What are alternatives to Open Dungeon Master?
Similar tools include Questwright, Friends & Fables, Hidden Door, Lorekeeper, AI Dungeon and Scenario.
Open Dungeon Master ratings and reviews
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Open Dungeon Master alternatives
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