Dark, oppressive mental asylum + endless horror instances + murder-mystery game mechanics + god-slaying system + inventive trope subversions.
Forget the traditional horror-game formula of fighting monsters and leveling up. The story centers on solving murders through murder-mystery games, reconstructing the truth, rewriting scripts, and slaying the gods of each instance. The mental asylum is both the anchor to reality and the protagonist’s most powerful cheat. The protagonist is a “sane madman,” with fresh concepts, bizarre instances, and mind-bending logic.