Whether you're a serious gamer or just a casual player, it's hard to hate on Mario.
Nintendo's Super Mario Bros. empire is celebrating its 30th birthday on Sunday, which arguably makes Mario and his clan of friends -- and enemies -- some of the most recognizable characters in gaming.
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But despite Mario's smash hits in the U.S., like Super Mario Kart and Super Mario Bros. 3, there are a few lesser-known Mario games that most American players wouldn't recognize because they were never sold outside Japan.
So in honor of his birthday, we roundup some of the lesser-known Mario games that never made it to the States.
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BONUS: A contemplative Mario reflects on 30 years since 'Super Mario Bros.'