Infinite Worlds AI Game Master

Infinite Worlds is a solo tabletop adventure with an AI Game Master. Describe what your character does; the narrator writes what happens next, remembers it, and keeps your character sheet, the people you meet and the threads of the story straight from the first chapter to the last.

CHOOSE WHO NARRATES
• On this phone: download a model once and play offline. Ten to choose from, in three sizes for 6, 8 and 12 GB phones, from Google, Mistral, Alibaba, Nous and the roleplay community. Nothing you write leaves the phone.
• Gemini Nano: on phones that have Google's built-in model, play with no download at all.
• Claude, with your own API key from Anthropic: the strongest prose, billed to your account, and the app asks once before any text leaves the phone.

THREE WAYS TO PLAY
• Dungeons & Dragons: a classic campaign with dice, hit points, gold, experience and levels. Fate is a d20, and the narrator reads the roll.
• Custom World: any genre and any premise. Set the stage in a sentence and step in.
• Worlds from the PC game or the web edition: bring a world seed or a whole story file and carry on where you left off.

A STORY THAT REMEMBERS
The game keeps your sheet, inventory, allies, places and open threads outside the model's head, and writes a running summary as the chapters pile up, so the twentieth scene still honours the first.

MADE FOR THE PHONE
• The narrator's options become tappable chips; type anything else.
• Five difficulty levels, from Story to Brutal.
• Passages read aloud if you like.
• Export a transcript or share a world.

FREE TO START
The download is free: the Sample storyteller and your first 20 turns with an AI narrator cost nothing. One purchase, Infinite Worlds Full, then unlocks unlimited turns for good. No subscription, no account.

PRIVACY
There is no account and no server of ours. With a model on the phone or Gemini Nano, nothing leaves the device. With Claude, your text goes to Anthropic under your own key and their terms.

Infinite Worlds is written for teens and adults: the stories can be dark, violent and intense, and an AI narrator is unpredictable. If a passage is offensive, report it from the menu under the passage. The on-device models need a phone with at least 6 GB of memory; Claude works on any phone running Android 10 or later.