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Filed under:A playtesting aid in Gradius became an enduring symbol of video games and pop cultureUp, up, down, down, left, right, left, right, rest in peace.Kazuhisa Hashimoto, a producer credited with implementing the fabled “Konami Code” that gave players godlike cheats in Contra, Gradius, Castlevania, and other Konami games for the Nintendo Entertainment System, died on Tuesday. Hashimoto put it in the game as an aid for his playtesting, memorably saying that he “obviously couldn’t beat it.” For unclear reasons, the Konami Code was left in the shipped game, and was later used to playtest other games made by the publisher.Contra, which launched on the NES in 1988, sold much better than Gradius and is more closely associated with the Konami Code’s origins.
As said here by Owen S. Good