Killer7 is a 2005 action-adventure video game developed by Grasshopper Manufacture and Capcom and published by Capcom for the GameCube and PlayStation 2. The game was written and directed by Goichi Suda and produced by Hiroyuki Kobayashi.
The game follows an elite group of assassins called the "killer7". The assassins, physical manifestations of a man named Harman Smith, perform hits on behalf of the United States government. Through these missions, the killer7 uncover a deeper conspiracy regarding the role of Japan in U.S. politics and secrets about the nature of their organization. Killer7 features first-person shooter elements and a unique on rails control scheme, but the core adventure-style gameplay has been compared to Myst and Snatcher. (Wikipedia)
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