Hidden Door

Hidden Door is an AI-powered collaborative storytelling and roleplaying platform that turns text-based roleplay and fan fiction into an interactive game. Users create original characters, worlds, and scenarios, then play through them in a dynamic narrative environment driven by generative AI. Instead of reading static stories, players co-create plots with the system, making choices that influence character relationships, settings, and outcomes.

The tool is designed for fans of roleplaying games, fan fiction communities, and writers who enjoy improvisational storytelling. Hidden Door supports play in existing or original fandom-inspired settings, offering structured adventures as well as open-ended narrative sandboxes. The AI is tuned to maintain consistent character behavior, tone, and story logic, helping groups stay immersed without needing a dedicated game master.