Oni is a third-person action game developed by Bungie West, a division of Bungie. Released in 2001, it was Bungie West's only game. It broke new ground by blending third-person shooting with hand-to-hand combat, resulting in a unique, yet familiar game for third-person shooter enthusiasts. In 1999, while still in development, Oni won the Game Critics Awards for Best Action/Adventure Game. Due to difficulties in debugging and the general unplayability of a fighting game over any less reliable network than a LAN at the time, multiplayer was omitted from the released version.
The game's universe is heavily influenced by Mamoru Oshii's anime film Ghost in the Shell. The main characters Konoko and Commander Griffin look similar to the film's protagonists Motoko Kusanagi and Daisuke Aramaki. Dark Horse Comics published a comic-book version of Oni as a four-issue limited series, the first issue of which was bundled with the Windows version of the game.