Hidden Door

Hidden Door is an interactive fiction platform in which an AI Narrator generates a story around the player's choices instead of following a script. Players pick a world, take actions in natural language, and the Narrator writes what happens next, with card based mechanics for collecting and playing new adventures. It is for players who want narrative driven play, for writers who want to build playable worlds, and for authors with an existing audience who want to turn their settings into games. Players can create custom characters, items and locations, chat with characters, and apply Modifier cards that change a world's tone or storyline. Creators build worlds in Atlas, the platform's world building studio, and can keep them private, share them with friends or publish them to the catalog, with monetization for published worlds. Three plans are published. Free costs nothing and includes unlimited stories and turns per day, up to five worlds from the catalog, one character conversation per day, custom characters, items and locations, modifier cards and achievements. Fan costs $7.99 per month, billed monthly, and adds unlimited worlds, unlimited character chat, custom prompts for card creation and a public profile; the vendor states that 30 percent of a Fan subscription goes to the creators of the worlds played. Creator costs $19.99 per month, billed monthly, and adds world creation with Atlas and early access to new licensed worlds. Subscriptions can be cancelled at any time and stories and progress are retained after cancelling.