Turns any AI into a Human-Like Game Master
BYO AI: Built to be AI Agnostic
Works with ChatGPT, Claude, Gemini, and future models.
A structured game mechanics system built on D&D 5e 2024 Free Rules. Feed it to ChatGPT, Claude, or Gemini. The AI reads the system, loads your campaign, and runs the game — tracking choices, remembering NPCs, and applying consequences that persist across every session. No app. No subscription. No group required.
Buy Once
Yours Forever
No subscriptions, no platforms, no sign-ups. Just download and play.
BYO World
BYO Adventure
Plug in your own world and adventure or an established one.
A DM that pushes back.
No more player 🐂💩.
Artificial Intelligence was made to be super helpful.
That makes a terrible DM.
Without Table of One
Seven Layers of Decision Logic
When the AI faces a conflict — rules vs. fun, consistency vs. drama — the Priority Stack resolves it. Seven ordered layers tell the AI exactly what matters most. Player enjoyment is Layer 1. Rules are Layer 4. The AI always knows which wins.
NPCs Aren’t Oracles of Knowledge
When the AI faces a conflict — rules vs. fun, consistency vs. drama — the Priority Stack resolves it. Seven ordered layers tell the AI exactly what matters most. Player enjoyment is Layer 1. Rules are Layer 4. The AI always knows which wins.
The core Table of One System Mechanics, providing an AI with a DM personality, rulesets and controls.
With Table of One
Choices That Actually Matter
Every meaningful action resolves across four tiers: Full Success, Partial Success, Failure, and Catastrophic Failure. The AI applies consequences to the world — not just to the moment. Lord Elio will remember that you lied to him.
Ready to play?
Frequently Asked Questions
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Download the System Mechanics.
Open your AI assistant.
Paste or attach the Table of One system document, then attach the campaign you want to run.
Tell the AI you're ready to begin. It handles the rest — scene-setting, NPC dialogue, dice rolling*, character sheets**.
*Optional: You can elect to manage dice rolls outside the chat.
**Optional: You can choose to manage your character sheet and inventory outside the chat.
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Table of One works with any AI assistant that supports PDF uploads and long context windows. Currently tested and confirmed: ChatGPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro.
Later models from any provider will work as long as they support document input. The system does not rely on any proprietary AI infrastructure — it is a ruleset, and any capable AI can read and run a ruleset.
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No.
But different AIs have different usage limit restrictions which can affect gameplay.
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The system has a method for dealing with the limitations of AI’s context windows.
By creating regular save files, the system creates a reference document that allows it to quickly update itself with the world-state and the campaign progress, thereby allowing for extended play without the AI forgetting context.
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No.
A prompt template is a few paragraphs that break after two sessions.
Table of One is a structured ruleset with a 7-level Priority Stack, Consequence Tiers, NPC Knowledge Hierarchies, and a human-like personality.
It's designed to run indefinitely without degrading.
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Not necessarily.
Table of One was built for solo play — one player, one AI dungeon master.
That said, nothing stops you from playing with a friend at the same table, both giving input while the AI runs the game. The system does not assume a specific group configuration.
The system supports multiple playable characters in one chat.
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While we’re still building the system document, we’re looking for play testers to provide valuable feedback and help guide the development of the system.
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The system currently runs on D&D 5e, however we intend to make the final version system-agnostic.