The real world hides a supernatural dimension that is above life and death, rules, and human nature - [Endless Cage]. It is not an independent space, but a spiritual entity world formed by the gathering of all human obsessions, sins, desires, fears, and greed. It uses countless independent and interrelated horror dungeons as a carrier to randomly drag ordinary people with "obsession, weakness, and glimpses of the darkness of human nature" into the dungeon trial.
Concept: immersive horror and supernatural, high-pressure suspense, imaginative puzzle solving, force and intelligence double pass, philosophical speculation, reality mapping, closed-loop foreshadowing, lonely and blank ending
