Killer7 is a unique and avant-garde action-adventure game for the Nintendo GameCube, blending elements from shooter, puzzle, and visual novel genres. Developed by Grasshopper Manufacture and directed by Goichi Suda (Suda51), the game was released in 2005. It features a distinctive cel-shaded art style and a complex, surreal storyline. Players control a group of assassins, the killer7, each with their own special abilities and personalities. As they navigate nonlinear levels, players switch between characters to solve puzzles, engage in gun combat, and unravel a dark and enigmatic narrative involving political intrigue and supernatural conflict.