
An AI-driven freeform narrative engine. Pick a world, pick a companion, pick a GM persona — then the world is created. Every choice matters, and no two journeys are the same.Free to play.
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. Copies below reflect the player base, not paid sales.
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About
Story Engine is not a game with a pre-written plot. It is a narrative engine that revolves around you — every choice, every word,
every direction takes the story somewhere completely different.
Pick a world. Pick a companion. Pick a GM persona. Then the story begins.
Walk into a tavern. Start a war. Fall in love. Betray a kingdom. Open a bakery in a quiet village. No dialogue wheels. No invisible
walls. You describe what you do — the AI unfolds what happens next.
Five GM Personas
The GM is the soul of every tabletop campaign. Choose the one that fits your mood:
Death — Cold. Inevitable. Every choice has a cost, and the bill always comes due.
Prophet — The world whispers of what's to come. Every scene drips with foreshadowing.
Gambler — Luck, risk, and unexpected twists. Nothing is guaranteed.
Mentor — Patient. Guiding. The world teaches you its rules, if you're willing to learn.
Confidant — Intimate. Character-driven. Every NPC has a heartbeat.
Built for Roleplayers
Import your own character cards (PNG format supported)
Companion mode with relationship tracking — guardian, rival, confidant, or something unspoken
Inventory, quest log, and active party tracking
Three difficulty levels — from Relaxed to Brutal (not recommended without extensive preparations)
Progressive world-building — lore entries unlock as the story unfolds
Play free.
No subscription. No hidden fees. cost — roughly $0.14 per hour of play.
Made by a non-programmer. With Claude Code.
The developer had never written a line of code before this project. The entire engine was built through conversations with AI. If that sounds wrong — it probably is.
Welcome to Story Engine.
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Languages: Simplified Chinese
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Trends
Price over time, from our own daily price tracking.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
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