The reader created a self-imitation game where AI constantly expands the liminal space: creating new rooms, creatures, characters and unusual places. First, the developer manually created 15 launch rooms, which became samples of the visual style and atmosphere of the world. After that, he fed Claude Opus 5.5 all backrooms with rules and principles. AI works in a continuous cycle: taking into account where the players go and where they hang out, coming up with new spaces, lighting, sounds, characters and creatures. Other AI models create graphics and 3D objects. He doesn't even know what the players can expect. The game features voice multiplayer to explore endless spaces with friends. You can play on both computers and smartphones. All Free - link to the game r/#ClaudeAI.