Nanatsu no Hikan: Senritsu no Bishou is a survival horror video game developed and published by Koei for the Sega Dreamcast. It was released on January 20, 2000, in Japan. Plans for a western release were planned but later cancelled. The game is a sequel to the 1996 Sony PlayStation and Sega Saturn game Nanatsu no Hikan.

Friends Kei and Reina land on a mysterious island and search for their friend Ernest. But along the way, they encounter many different monsters in the different mansions they discover. It's up to them to defeat these foes, find their friend, and understand the mysteries of the island.

The player can control one of two characters: Kei and Reina. The game can be played in either first person, third person, or fixed camera angle (e.g. Resident Evil) views. Kei's levels are more action based, while Reina's are more adventure-based.

There is also a unique multiplayer cooperative mode where one player controls Kei and the other Reina (a feature not seen in survival horror games until the 2005 game ObsCure) This mode is different from the single-player mode, as it is much shorter and objectives, monsters, and events are all altered.