|This game was originally scheduled to be released under the title Arc Hound in Japan. Arc Hound was announced in various Japanese publications and promotional brochures included in other Konami games released in 1991, but was ultimately canceled.|
Despite the game's cancellation in Japan, Konami localized the game in North America as a Contra spin-off. While the plot has no ties to the rest of the Contra series, Konami's localization team attempted to imply a connection by renaming the first stage of Contra III: The Alien Wars "The Streets of Neo City".
A bug in the game, makes the character leap spin through the air indefinitely while the player keeps the jump button and press Start simultaneously.
The melody of the characters selection screen is reused again in the game Contra ReBirth.
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