Hidden Door builds a narrative-AI platform that converts stories into dynamic, collaborative roleplaying experiences where an in-game AI dungeon master generates text, characters, items and 2D art based on player choices. The product combines tabletop RPG vibes with social, shareable worlds—players pick characters, items, locations and tropes, then the AI generates responsive scenes and collectible artifacts. Hidden Door says its model was trained on two million stories and is fine-tuned on authors’ work to balance plausibility and surprise. The startup is currently testing an adaptation of The Wizard of Oz and is running product tests with a cohort of nine- to 12‑year‑olds. The company plans to partner with roughly a dozen sci‑fi and fantasy authors to enable community-driven world building and is actively seeking additional tech partners interested in generative AI. Financially, Hidden Door recently closed a $7 million seed round to support its continued development and testing. Hidden Door is a technology studio at the intersection of machine learning and immersive entertainment that aims to build the world’s first narrative multiverse. Its first product is a social game platform for playing stories with friends across a variety of shared creative universes, styled as interactive graphic novels with a playful AI narrator. The platform responsively generates NPCs, items, and locations that players can collect, trade, and remix, and is built on extensible proprietary models of language and art trained on millions of stories. Hidden Door offers APIs for developers to build interactive, improvised story experiences while adhering to rigorous content and safety standards. Future plans include expanding the game to include a marketplace for content from professional writers, artists, and other players and enabling creators to adapt existing works for the medium. The company launched an invite-only alpha slated for early 2022 for players ages 9 and up and has closed a $2M pre-seed round.

Total raised

$9M

Funding rounds

2

Latest round

Seed

Latest activity

Oct 2022