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 * 1-Up Mushrooms appeared in the infamous Hotel Mario, but the game's instruction book accidentally referred to them as Toads.
 * A Super Mario-themed chess set was released by USAopoly in September 2009.
 * An unnamed plumber resembling Wario appeared in the Episode Plumbers Academy of The Super Mario Bros. Super Show!. The similarity was most likely coincidental however, since Wario's actual debut was several years later.