Theresia

Theresia (テレジア), known in Japan as Theresia: Dear Emile, is a psychological horror visual novel adventure game developed by WorkJam and published by Aksys Games, released exclusively for the Nintendo DS. It is one of the few DS games to receive an ESRB rating of M for "Mature" and a CERO rating of C from "ages 15 and older", and is the fifth of 11 DS games overall to be issued the former rating for a North American release. The game follows an amnesiac teenager named Leanne wandering an abandoned military installation, trying to regain her memories and escape while avoiding traps designed to kill her.