01
Rewind any moment
Delete a message and everything after it goes with it, including whatever the AI learned from it. The story resets clean to that point so you can take the other branch.
01Cold open
WhereWorldsCollide
Any world, any character, any turn you feel like taking. No script to follow, no path you were meant to pick, nothing off limits. Find out where a story goes when every choice is yours.
CollideNo.1FREE
Spring Special!
Cover illustration: an anime high school girl in a blazer and pleated skirt, school bag over one shoulder, waving at the reader.
I died and got reincarnated as high school girl?!
Collideai
02The first two ways to play
A narrator, or just a text thread
Story mode runs the world around you, scene by scene. Texting mode drops the narration entirely. You’re just messaging someone, and they answer on their own terms. Built on the newest frontier model.
AStory modeCapture
You’re twenty paces past the gate when the wind stops. Not dies down. Stops. Kerra puts a hand on your arm without looking at you. “That’s not weather.”
I signal the others to spread out and get low
Too late to spread out. The first bolt takes the lantern off the cart and the pass goes dark. You count the sources by sound — high on the left ridge, and both sides of the road ahead. Kerra is already moving left, which means she expects you to take the road.
I stay low and work along the cart line toward the road
Weaving the narrative…
KB
Kerra
typing…
nobody’s seen Dae since thursday
did you check his place
In character
his door. i haven’t touched anything
Story mode
You control one person. The AI runs everyone else: allies, enemies, bystanders, along with the timing, the terrain, and what your choices actually cost you. Capture any moment along the way and it comes back as a picture.
Texting mode
No prose, no narrator. Just a thread with someone who writes the way they talk, replies when it suits them, and sends photos that match how they’ve looked all along.
Coming soonMore ways to play続く · to be continued
STORY MODETEXTING MODECAPTURE ANY MOMENTINFINITE MEMORYANY UNIVERSEREWIND ANYTHINGSTORY MODETEXTING MODECAPTURE ANY MOMENTINFINITE MEMORYANY UNIVERSEREWIND ANYTHING
03Features
What it actually does
Six things that decide whether a long story holds together or quietly falls apart around message eighty.
02
Canon worlds or your own
Start in an established setting and it already knows the rules. Describe something new and it builds outward from whatever you give it.
03
Capture any moment
Turn any scene into a picture. Characters send their own photos too while texting you.
04
Memory that holds
Backstory is locked. Current state (injuries, moods, who's speaking to whom) updates as you go. Two hundred messages in, it still tracks.
05
Characters in one line
Give a name and a sentence of intent; autofill writes the rest. For characters that already exist, it pulls from what's actually established about them.
06
Turn any of it off
Photos, text effects, sound. Each one is a switch, so you can run it as a full production or strip it back to plain prose.
04Memory System
It doesn’t lose the plot
Most AI roleplay falls apart the longer you play. Characters forget who they are and what already happened. CollideAI keeps the whole story straight. The long runs are the point.
- 01Characters stay themselves, a hundred messages later
- 02Moods, outfits and injuries carry over between scenes
- 03Grudges and loose ends stay open until you deal with them
- 04It brings the past back on its own. No reminding it
05Popular anime worlds
Start somewhere familiar
Copy a setup, paste it in, and you’re running. Each one drops you at a specific moment with something already going wrong, rather than a blank page.
∞Worldscanon or your own
∞Memoryno context ceiling
進撃の巨人Attack on Titan
Humanity fights for survival within massive walls against man-eating Titans.
“I’ll be a fresh Survey Corps recruit on my first mission outside the walls with Levi’s squad.”
More Attack on Titan setups
鬼滅の刃Demon Slayer
Join the Demon Slayer Corps and master breathing techniques to battle demons.
“I’ll be a new Demon Slayer taking my first mission on Mount Natagumo with Tanjiro’s group.”
More Demon Slayer setups
呪術廻戦Jujutsu Kaisen
Wield cursed energy as a jujutsu sorcerer battling deadly curses.
“I’ll be a second-year sorcerer arriving in Shibuya to tackle a special grade curse trapping civilians.”
More Jujutsu Kaisen setups
僕のヒーローアカデミアMy Hero Academia
Become a hero in a world where 80% of people have superpowers called Quirks.
“I’ll be a new transfer student joining Class 1-A on day one at U.A. High.”
More My Hero Academia setups
ナルトNaruto
Walk the path of the ninja, master jutsu, and protect your village.
“I’ll be a Leaf genin stepping into the Chunin Exam finals to face a Sand opponent.”
More Naruto setups
ワンピースOne Piece
Set sail on the Grand Line in search of the legendary One Piece treasure.
“I’ll be a pirate captain with a custom Devil Fruit landing on a Yonko-held island hunting a Road Poneglyph.”
More One Piece setupsOr describe your own setting. The memory system doesn’t care whether the world is famous.
06Questions
Asked and answered
The short version of everything above, for anyone who scrolled straight here.
Q01What is CollideAI?
An AI roleplay app for Android. You bring a world and a character, the AI plays everything else and remembers what you build. There is no script: the story goes wherever your choices take it.
Q02Is CollideAI free?
Free to download on Google Play, with an optional subscription.
Q03What is the difference between story mode and texting mode?
Story mode is narrated: you control one character and the AI runs everyone and everything else, scene by scene. Texting mode drops the narration entirely and gives you an SMS-style thread with a single character.
Q04Does the AI actually remember long roleplays?
Backstory is locked and never drifts. Current state, injuries, moods, who is speaking to whom, updates as you play. Two hundred messages in, it still tracks.
Q05Can I use my own original world and characters?
Yes. Describe a setting in your own words and the AI builds outward from it. For characters, give a name and a sentence of intent and autofill writes the rest. The memory system does not care whether the world is famous.
Q06What does rewind do?
Deleting a message removes everything after it, including whatever the AI learned from it. The story resets clean to that point so you can take the other branch.
Q07Is CollideAI on iPhone or the web?
Android only right now. The Google Play listing is the only official download.
Q08Is CollideAI a Character.AI alternative?
A different shape of one. Character.AI is an open chat with community-made characters; CollideAI is built around a narrated story mode, a texting mode and a memory system designed for long roleplays. There is a full comparison at collideai.app/character-ai-alternative.
Read the comparison07Last page
Your move
Pick a world or write your own. Close the app mid-scene and it will be exactly where you left it, with everything it knew still intact.
Get it on AndroidFree to download