Nanatsu no Hikan: Senritsu no Bishou is a Sega Dreamcast game featuring two playable characters, Kei and Reina, each offering distinct gameplay styles. Players can switch between first-person, third-person, or fixed camera perspectives. Kei focuses on action sequences while Reina engages in adventure-oriented challenges. Additionally, the game includes a cooperative multiplayer mode where players control Kei and Reina together, with modified objectives and encounters.
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 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. This mode is different from the single-player mode, as it is much shorter and objectives, monsters, and events are all altered.