Juujimoto Ripputai Sypher: Game of Survival

Juujimoto Ripputai Sypher - Game of Survival is a real time mystery adventure game that was released for the PC as an adult game and later ported to Playstation 2 & PSP consoles, this time removing the adult parts.

In the game the player's character (Takuto Fujishiro) and 11 other people are part of some clinical study, and all have to live in a dark two-stores mansion with all the windows shut closed with wooden planks during a week, but what started as an experiment soon will turn into a dangerous mystery when the fear and murders starts.