euphoria

euphoria is a dark and psychological Japanese adult visual novel which contains strong sexual content, depicting sexual torture and extreme fetishes such as coprophagia. The player controls Keisuke Takato, a troubled young man who one day wakes up trapped in a featureless white room with six women from his school: his English teacher Aoi Natsuki, and five students: his childhood friend Kanae Hokari, the class president Miyako Ando, a junior student named Rika Makiba, a same-year student named Rinne Byakuya, and a classmate named Nemu Manaka. A disembodied voice informs them that they have been chosen to participate in a twisted game where Keisuke holds the key to their survival.

As the "Unlocker", Keisuke must periodically choose one of the girls to become a "keyhole" and "unlock" them by performing a specified degrading act on them in order to escape. Although the girls expect Keisuke to save them, our protagonist has a secret: he is a sadist, and this is exactly the kind of situation that excites him more than any other. With his future and the future of his classmates at stake, Keisuke must decide whether he will do the right thing and lead the girls to safety, or succumb to his dark desires.

Like most visual novels, the gameplay consists of reading through the story, interacting with characters, and periodically making a decision that may cause the story to branch off into different paths. The game has multiple achievable endings and features voice acting for all significant characters except the protagonist.