Play ANY world. Every decision cascades. Every world becomes a book.
Play These Scenarios Free
Advise President Kennedy through 13 days that could end civilization.
Start PlayingWhat if Indigenous Americans had gunpowder before European contact?
Start Playing3-minute walkthrough of Chronostates — event cards, cascading consequences, world building, and AI-powered novel generation.
Other tools do pieces. We do the whole thing.
Sudowrite, NovelAI, etc.
World Anvil, Campfire, etc.
Chronostates
Screenshots from the Gettysburg Gambit scenario — event cards, cascading consequences, and the living world bible.
AI-generated event narrative — Lee's Dilemma after Gettysburg
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Type a what-if question and watch history diverge. No signup required.
From premise to published chronicle in three steps.
Pick from prebuilt alternate history scenarios, or create your own world from scratch.
Each event presents 4-5 choices. Play as any character from any point of view in any time of history.
Your choices cascade through time. Alliances shift, wars start or end, technology advances, and the world transforms.
Every event is uniquely generated based on your timeline's history, world state, and the choices you've made.
Each choice propagates through time. A trade agreement today might prevent a war decades later — or cause one.
Political alliances, economic conditions, technology levels, and cultural movements all evolve with your choices.
Every event automatically builds your lore. Characters, factions, and history accumulate into a living world bible.
Share your worlds with the community. Play through others' scenarios, fork worlds, and rate creations.
7 LLMs write, rank, and synthesize each chapter. The best AI-generated fiction from your world.
See how writers and history enthusiasts are using Chronostates to build alternate worlds.
P. Simpson
What if Pickett's Charge succeeded? A 200-year alternate timeline exploring a divided continent.
CosmicChronicler
Alien ships appear over Washington during the Cuban Missile Crisis. Kennedy must negotiate with two extraterrestrial threats at once.
DarkWorldWriter
Vampires have secretly ruled European courts for centuries. Play as a newly-turned noble navigating immortal politics.
ChronoScribe
Constantinople never falls. The Eastern Roman Empire enters the Age of Exploration as a superpower.
Start free. Upgrade when you want more.
$0
5 prebuilt scenarios, Sandbox Mode or World Builder, Event generation, 500-word End of Year summary.
$10/mo
ChronoStates Sandbox access, Prebuilt scenarios added frequently, 100 events per month — or use 20 events to generate a book chapter, Generate Chapter 1 of your book as a sample, 1,000-word End of Year generation.
$30/mo
Everything in Voyager, World Bible access, 100 events per month, Books up to 40 chapters — premium drafter + AI reviewers, Image generation at End of Year events, Share worlds to Content Library, Additional books $9.99 each.
$50/mo
Everything in Explorer, 1 book/month — top-tier drafter + Fable-led review panel, Book Cover Generation, 150 events per month, Audio generation, Connectors to post to Substack/Patreon/YouTube/TikTok, Additional books $29.99 each.
$80/mo
Everything in Creator, 2 books/month — frontier drafter (Terra or Fable) + advisor panel, Book Editor access, 200 events per month, Additional books $39.99 each.