Once Upon

Once Upon A narrative RPG that plays itself while you work. Pick a module — fantasy food cart journey or sci-fi survival mystery. Create your character.

Set a task from your real life. Start a 25-minute Pomodoro timer and go do that task. While you focus, the AI writes your next chapter.

When the timer ends, you come back to a new page of the story waiting for you. The world has moved. Your crew has done things.

Someone said something you need to respond to. You read the chapter, make a few decisions from the cards on screen, type any free-form actions you want into the action box, and start another Pomodoro. That's the loop.

Not a game you grind — a game that grows alongside your real-life focus sessions, one chapter at a time. (Not in a work mood? ) Two Modules At Launch: The Wanderer's Table — A fantasy cooking journey.

You travel a continent with a food cart, a stubborn pony, and your grandmother's half-finished cookbook. Five great cities, five cuisines, no combat. The weapon is a pot.

The magic lives in the kitchen. ~70-90 sessions. Outpost Kaleo — A sci-fi survival mystery.

31 colonists are missing. No distress signal. You have five crew, a damaged base, and one question: what happened here?

Tiered lore revelation, psychological horror, multiple endings. Up to 31 sessions. How It Plays Every session gives you a fresh chapter, 3-6 decision cards, and a free-text action box.

The AI runs NPCs, events, resources, and dice rolls behind the scenes. Your job is to steer, not micromanage. Build Your Own Module is really an engine with two games loaded into it.

Everything — world, crew, rules, AI personality, events, music, theme — lives in a single folder of JSON files and art. Swap the folder, swap the game. Full Module Author Guide ships with the download.

Drop a DLC folder in `modules/` and the engine auto-discovers it. If you can describe a world, you can build a module. Free AI Included Ships with a free AI tier built in.

No API key, no account, no subscription — launch and play. Full English and Simplified Chinese.