World 8-1 (Super Mario Bros.) - Super Mario Wiki, the Mario

World 8-1 is the first level of World 8 in Super Mario Bros. and the twenty-ninth level in said game. It is the longest level in the game. In VS. Super Mario Bros., this is the only level that has a higher time limit than its original version.

New Super Mario Bros. U - Cemu Wiki

World 8-1 (Super Mario Bros.) - Super Mario Wiki, the Mario encyclopedia

World 8-1 (Super Mario Bros.) - Super Mario Wiki, the Mario encyclopedia

Super Mario 3D Land, MarioWiki

World 1-1 - Wikipedia

World 8: Stage 8-1 - Super Mario Guide - IGN

World 7-1, A history of the Mushroom Kingdom Wiki

World 8-3 (Super Mario Maker for Nintendo 3DS) - Super Mario Wiki, the Mario encyclopedia

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