Adventure Mode turns Claude into a persistent, high-stakes tabletop Game Master. Every character, wound, promise, and grudge is written to your private vault as it happens, so the world never forgets and neither does anyone in it. Play on your phone, your laptop, or the browser on your Steam Deck: one campaign, always exactly where you left it.
The hooded stranger in session 40 really is the trader you shorted in session 2. Every fact lives in your vault, not in a context window.
Rolls happen server-side with real randomness and land in an auditable ledger before the GM narrates. Nobody fudges, in your favor or against.
Conditions instead of hit points. Permadeath by default. One bad decision can end it all, and the campaign means something because of it.
Factions act on their own timelines whether you show up or not. Ignore a villain long enough and they win things.
Party members have their own drives, fears, standards, and arcs. They can love you. They can refuse you. They can die.
The Claude mobile app, a desktop, any device with a browser: a Steam Deck works fine. Your campaign lives in the cloud, persists across every session, and resumes with the exact same scene and choices wherever you pick it up. Close the tab mid-fight and open it on another device: the sword is still mid-swing.
https://adventure-mode.com/mcpnew game in any Claude chat. Pick a world, or say session zero and build your own with the GM interviewing you.--help at the table any time to see every command.Adventure Mode runs on YOUR Claude subscription: we never resell a cheaper model behind a credit system. Your campaign is markdown you own, exportable any time.
Survival horror. Northern Minnesota, five weeks after the evacuation convoys stopped, deep winter. The dead slow down in the cold. Spring is coming.
Crime drama. Brickport, NJ, 1979. Start as an associate on the fringe of the Marchetti family. The ladder goes up forever, and so does the drop.
Session Zero builds an original world with you: genre, factions, villains, dials. It compiles to a pack you can replay and share, and community packs are welcome on GitHub.
7-day free trial. Cancel anytime.
7-day free trial. Cancel anytime.
The game is open source. Run it locally with Claude Code, free forever.
Cloud accounts get private vault hosting, server-side dice, cross-device play, and automatic backups of every campaign. Payments are handled by Polar; we never see your card.