Mythic GME Fate Chart & Solo RPG Oracle

Roll against the Mythic Game Master Emulator Fate Chart — set your Chaos Factor and question likelihood, roll 2d10, and get an instant Yes/No/Event result. Also includes the Random Event generator and Meaning Tables.

Set options and roll

Fate Chart Reference

Roll 2d10 — if the sum is equal to or under the number, the answer is Yes. Doubles that fall inside the Yes range add a Random Event.

CF Impossible No Way V.Unlikely Unlikely 50/50 Likely V.Likely Sure Thing Has to Be

How it works

Mythic GME replaces a human GM by using probability tables and your imagination. The Fate Chart answers yes/no questions based on two factors:

1 Set Chaos Factor Ranges 1–9. Higher CF = more chaotic, unpredictable scene. Start at 5, go up when heroes fail or lose control, down when things go their way.
2 Judge Likelihood How likely is a "yes" answer to your question given the story so far? Pick Impossible through Has to Be. Adjust for narrative logic.
3 Roll 2d10 The chart gives a threshold. Roll equal to or below = Yes. Roll above = No. Both dice show the same number (doubles) and fall inside the Yes range = Yes + Random Event. Doubles outside = No + Random Event.
4 Random Events Triggered by doubles. Roll Event Focus (d100) to know who is affected, then two Meaning Table words (Action + Subject) to interpret what happens. Events keep solo play surprising.

Example: CF 5, question is "Likely". Threshold = 15. You roll a 3 and a 7 → sum 10 ≤ 15 → Yes. If you had rolled 5+5 = 10 (doubles) ≤ 15 → Yes + Random Event!

Frequently asked questions

What is the Mythic Game Master Emulator?
Mythic GME, designed by Tana Pigeon (Word Mill Games), is a tabletop RPG supplement that lets you play any RPG without a human GM. Its core engine — the Fate Chart — answers yes/no questions with weighted probability, while the Scene Management system handles pacing. You ask questions about the story, roll dice, and interpret results. The result is a genuinely surprising narrative even the player cannot predict. This tool implements the core Fate Chart, Random Event, and Meaning Tables mechanics so you can play directly in a browser.
How does the Chaos Factor change the odds?
Chaos Factor shifts every threshold on the Fate Chart by roughly 1–2 points per step. At CF 1 (minimum chaos), the game is tight and ordered — "Likely" questions become harder to get a Yes. At CF 9 (maximum chaos), the Yes thresholds are pushed up, making even "Unlikely" answers more probable and Random Events far more frequent. This mechanically models how out-of-control the current situation feels. Start every adventure at CF 5 and adjust at the end of each scene: up if the heroes lost or chaos escalated, down if they succeeded cleanly.
What triggers a Random Event, and how do I interpret it?
A Random Event triggers whenever you roll doubles on 2d10 — both dice show the same face (2+2, 3+3, etc., up to 10+10). If the doubles sum falls inside the Yes threshold, the answer is Yes AND an event occurs. Outside the threshold, No AND an event. To resolve it: roll d100 for Event Focus (which tells you the subject — a new NPC, the main character, a thread, an ambiguous "remote event", etc.), then roll two d100s on the Meaning Tables for an Action word and a Subject word. Combine those words with the focus to improvise the event. The interpretation is always yours — the tables give spark, not a script.
Can I use this tool without owning the Mythic GME rulebook?
This tool includes the full Fate Chart lookup table, all Event Focus entries, and the complete Action and Description Meaning Tables — everything needed to run the mechanical engine. However, Mythic GME also covers Scene Management (how scenes alter and interrupt), Thread and Character Lists, and the broader framework for structuring solo play. If you enjoy the oracle and want the full experience, the original Mythic GME 2nd Edition by Tana Pigeon (Word Mill Games) is the definitive reference. This tool is an independent fan aid, not a substitute for the rulebook.
What does "No Way" or "Near Sure Thing" mean as likelihood options?
"No Way" means almost certainly not — use it when logic makes a yes answer nearly impossible in context, but not quite absurd (e.g., "Does the guard believe my obviously fake story?" after you already botched persuasion). "Near Sure Thing" is the mirror: use it when a yes answer is almost certain given what's been established ("Will the fire spread to the dry barn?"). Both exist so you can fine-tune the probability more precisely than a simple 50/50 or Likely. The nine likelihood columns give you a full spectrum from 1% chance to 99% chance, modulated further by Chaos Factor.