Hidden Door is building the narrative multiverse at the intersection of machine learning and immersive entertainment. Launching in 2022, our first product is a social game platform for playing stories with friends across a variety of shared creative universes. Our mission is to inspire creativity through play with AI, using natural language, vibrant art, and playful social storytelling experiences.

Our underlying technology platform is built on extensible proprietary models of language and art, based on millions of stories. Through its APIs, developers can build online experiences for interactively improvising new stories together with groups of players, while adhering to rigorous content and safety standards. In the future, this will enable creators to automatically adapt existing works for this new medium.

Founded in early 2020 by Hilary Mason and Matt Brandwein, we're proud to be backed by Northzone, Makers Fund, Betaworks, Brooklyn Bridge Ventures, Homebrew, and angels Dan Sturman (CTO of Roblox) and Joshua Schacter (founder of del.icio.us).