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Super Mario Bros. is a 1985 platform video game internally developed by Nintendo EAD and published by Nintendo as a pseudo-sequel to the 1983 game

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Super Mario Bros. 3 (NES) : Nintendo : Free Download, Borrow, and Streaming : Internet Archive

Super Mario 35' Evokes Nintendo's Strained Relationship With Fan Developers : NPR

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Mario Bros. (NES) - online game

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Super Mario Bros. 2 - Japan version » NES Ninja