ComicsA three-part comic miniseries based on Oni was published by Dark Horse Comics in early 2001. A special #0 preview issue was included with the March issues of GamePro and Gamer's Republic magazines.
DevelopmentOni was originally intended to be multiplayer, but the designers dropped this when they couldn't get the game engine to perform fast enough over a net connection. There are remnants of the lost multiplayer option in the finished version. The manual still describes the other characters' various strengths and special moves, and once the player has beaten the game (or hacked a certain file), they can play as characters other than Konoko.
Gathering of GoodnessIn the American edition of Oni, mailing back the registration card entitled the player to receive a Gathering of Goodness CD that contained patches, demos and movies of upcoming Gathering of Developers games plus a bunch of special god games content.
Title"Oni" is Japanese for ghost or demon.
Information also contributed by Roger Wilco, Terok Nor and Ye Olde Infocomme Shoppe.