Zatsuon Ryouiki

Naoto Matsumoto is a young man who suffers from a peculiar memory loss: he does not remember his life before he was fourteen. Apparently both his parents died, and he was taken in by another family. On one rainy day, during a trip through the countryside, Naoto's car reaches a dead end on the road, and he and his stepsister are invited by a maid to spend the night in a large secluded mansion. Naoto witnesses increasingly strange and violent events and begins to recollect his lost memories.

Zatsuon Ryōiki is an adult psychological horror game. The gameplay follows the visual novel format. There are many instances which prompt the player to choose a location to go to or make another decision. These choices lead to different scenes and eventually different endings. There are eighteen endings in this visual novel, many of which depicting violent death. The game keeps track of the player's progress and encourages multiple replays to uncover the entire story.