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+---- Thread: Luigi's first appearance? (/thread-2082.html)
Luigi's first appearance? - DidYouKnowGaming - 10-19-2014
Luigi appeared in the Mario Bros. Game & Watch game before the Mario Bros. Arcade game.
Mario Bros. Game & Watch was released on March 14, 1983. [InTheAttic]
Mario Bros. Arcade was released on July 14, 1983. [Nintendo's YouTube via Wikipedia]