North American release. Game developed in Japan. For more information about the game itself, please see the original Japanese release entry; "Contra [Model DMG-CNJ]".
Cartridge ID: DMG-CN-USA
Released in the United States in February 1991 under the Operation C title (like the American NES port of Super C, the Contra name is not used in order to avoid connections with the Iran-Contra scandal of the 1980s).