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Roll Zero0

An AI game master that runs tabletop adventures in your browser: real 5e dice odds, a tactical map, and saves that follow you between devices.

Play now ↗ How it stays free
TYPE
Web game
MODELS
Gemini, Claude, GPT + local
HOSTED
Cloudflare Pages
STARTED
Aug 2026
Roll Zero0 mid-campaign: the Game Master's opening scene with three suggested actions, a d20 button, and the hero sheet with hit points and ability scores

PICK A WORLD

15 campaign genres

Each one comes with its own starting hooks, so you're playing within a minute instead of writing a premise.

UNDER THE HOOD

What makes it feel like a real table

Hit points bar and six ability scores, each one a button that rolls a check

Rules on the dice

A 5e adjudicator rolls real odds, so the story can't just hand you a win.

Campaign setup: title, pronouns, hero name, class, race and portrait, each with a Roll button

Roll up a hero

Every field can be rolled or written by hand: name, class, race, portrait and the story hook.

Campaign picker with tabs for genre categories and your active experiences

Saves that travel

Your campaigns wait under Active Experiences. Sign in and they follow you to your other devices.

THE PLAN

Free to play, no bait-and-switch

No paying for a game and then paying again for credits. You choose how the AI gets powered.

  1. 01

    Free trial

    Start on a fast, cheap model with nothing to set up.

  2. 02

    Bring your own key

    A guided walkthrough for free API keys, or plug in any model you already pay for.

  3. 03

    Credits + upgrades

    Buy credits for top models, or add extras like image generation and richer prose.