This is a 1.5-hour horror puzzle game. Players control Ran Qiqi as she explores the third floor of the Amber Hotel, deducing clues, collecting keys, documents, and items to solve environmental, logic, and item combination puzzles. Players must evade a blood demon that uses motion detection to lock onto targets, or use limited weapons to fight bosses. During exploration, players can collect over ten documents to piece together the world's lore, and some puzzles have alternative solutions. The game features hand-drawn 2.5D graphics and sound effects.