Tuesday, 8:17 PM
"A mystery about the sock that vanished from the dryer"
Good for one more chapter before lights out.
Cosmonaut: AI choose-your-own-adventure stories for families
AI choose-your-own-adventure stories, written for families. Describe any world - a mystery, a kingdom, a spaceship with a secret - and Cosmonaut writes a branching story shaped by your choices.
Try it for yourself
A story should feel read, not generated.
This is a real Cosmonaut story. Make a few choices and see how it feels to read something branching, not generated paragraph-by-paragraph.
Start
The ancient starship Wanderer drifts silently through the void, its hull scarred by centuries of cosmic travel. You've been awakened from cryo-sleep by an automated distress signal-something has gone terribly wrong.
The emergency lights cast long shadows across the empty corridor as you step out of your pod. The ship's AI, ARIA, flickers to life on a nearby terminal.
"Crew member detected. Current status: critical. Primary systems offline. Life support at 23%."
You notice two corridors branching ahead. To the left, the bridge pulses with faint blue light. To the right, you hear the rhythmic hum of the engine room.
What do you do?
Take it with you
We're on Android!
The same branching stories, audio narration, and story map — in your pocket. Read on the couch, in the car, or wherever bedtime happens to be tonight.
Get it on Google Play
Not another prompt machine
Made for the moment someone says, "wait, what if..."
Cosmonaut should feel closer to opening a strange, well-made book than operating an AI tool. The prompt is only the matchstick. The product is the shape that lets a family, a solo reader, or a group of friends keep caring about what happens next.
From the table
Saturday couch fort
"Grandma has a vegetable garden on Mars"
Let the brave tomato captain make one terrible joke.
Rainy train ride
"A polite dragon learns how to apologize"
No fighting. Big feelings allowed.
Chapter-shaped
Scenes have texture, momentum, and stopping points, so they work as actual read-aloud material.
Choice-led
Every branch asks for a real preference: brave, cautious, funny, curious, or kind.
Built to revisit
The story map keeps paths legible, so one strange decision can become a favorite route later.
Your turn
One odd detail. One whole story.
A missing moon name. A dragon who needs to apologize. A garden on Mars. Give Cosmonaut a spark and read what grows from it.