Find the crosses hidden in the colours — and unbuild them in reverse.
Interactive storytelling platform where you play, create and share stories in beloved worlds
Stage
Not given
Established
Founded
Not given
2020
Based in
Not given
US
Pricing model
Freemium
Freemium
Pricing
Free with ads; premium one-time purchase removes advertising and unlocks larger boards.
Free tier includes unlimited play across all worlds, character chat, and personal profile. Creator plan available for creating and sharing custom worlds (price not specified on pricing page).
Key features
Reverse-order puzzle solving with visual stack unwinding
Budget-based scoring system with vessel metaphor
Two-tap control interface with visual feedback
Difficulty selection with variable cross counts
Musical scale progression during gameplay
Hint system with cross visualization
Six language interface support
Interactive help tour
Adjustable board size for varied challenge
Interactive fiction gameplay with branching narratives
Character chat and side conversations
Atlas world-building studio
Licensed worlds from film and publishing partners
Modifier cards for story customization
Private and public world sharing options
Creator API for building custom experiences
Hand-drawn art and human-written narrative beats
What makes it different
Plays the game's deal sequence backwards as sound when solving
One-time purchase with no subscriptions or additional in-app purchases
Score system uses visual vessel metaphor instead of climbing counter
Clean minimalist UI with readable typography and strong UX
Protects creator IP and never trains models on partner content
Narrative world model ensures canon compliance across all player stories
Human-created narrative beats and art paired with specialized AI
Transmedia experience combining fanfiction, RPGs and social gameplay
Small tuned models that outperform larger general models on narrative tasks
Hidden Door