Nightmare Manor – Infinite Prison

Women who fall asleep are slipping into comas for no medical reason, victims of what locals call "nightmares." Kuroki Sana and her best friend Ujimiya Tomo get caught by one themselves and wake up somewhere that isn't home.

That somewhere turns out to be a prison built from despair, with no obvious way out and no explanation for why the two of them are inside it. The remake keeps the setup simple: two friends, one nightmare, no exit.

Play centers on exploring this prison and solving the puzzles standing between Sana and Tomo and any hope of escape, while the place itself works against them through tentacled horrors, mind control, and captors who treat resistance as an invitation. Corruption creeps in the longer they stay trapped, and the manor doesn't let either woman leave the way she came in.