What Altworld is
Altworld is a free AI game you play in the browser: a life simulator and story sandbox where you forge or choose a world, become a person inside it, and act in plain language. It is built on one conviction — that an AI story is only as good as what the world remembers.
Most AI games keep their world inside a chat transcript, which means the world slowly forgets itself. Altworld keeps canonical, structured state: characters, relationships, factions, resources, rumors, locations, laws, and memories all live in a database, not in a context window.
How the simulation works
Every turn runs through a pipeline, not a single chat call. The engine interprets your action, adjudicates it against the current world state, advances world systems (economy, politics, unrest, NPC plans), persists the changes transactionally — and only then generates the narration from what actually changed.
That order is the whole trick: narrative text is derived from state changes, never the other way around. It is why a debt from turn 3 still exists at turn 40, why NPCs hold grudges, and why two runs of the same world never end the same way.
Worlds are playable at two speeds: Lite mode resolves turns in seconds for chat-style mobile play, and Full mode runs the deep simulation for long campaigns. Multiplayer sessions let several players share one persistent world through an invite link.
Who builds it
Altworld is built by a small independent team that cares about simulation depth more than engagement tricks. The game is funded by optional Candle top-ups and passes — never by selling your data.
We write about the wider AI gaming space in our guides, and we hold ourselves to a simple rule there: disclose that we make Altworld, compare honestly, and recommend competitors when they're the better pick.
Contact
The fastest way to reach us is Discord — the community and the developers are in the same server. We also read DMs on Instagram, TikTok, and Reddit.