Open-ended, persistent

A Character AI Alternative Built for Stories

Not a single chat that resets. You step into a living world with locations, factions, NPCs, and consequences that carry forward turn after turn — solo or with friends.

For players who want roleplay with a world that remembers, instead of a chatbot that forgets the scene.

A cold medieval village before winter.

The world remembers

Relationships, factions, rumors, resources, and events persist as structured state — not a chat log that forgets.

You drive the story

Write any action in plain language. The simulation interprets your move and changes the world before it narrates.

Play with friends

Share a link and run the same world together in a multiplayer session — something chatbots do not do.

Matching searches

Built for this kind of play.

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How is Altworld different from Character AI?

Character AI is a chat companion. Altworld is a stateful life sim: it persists a whole world with consequences, and you can play it with other people.

Is it free to try?

Yes. You can start a run and play immediately, including as a guest before making an account.