World 8 (Super Mario Bros.)

World 8 is the eighth world of Super Mario Bros. This is the final world in the game, leaving only four levels left in the game. In World 8, three ground levels are traversed, as well as the final castle level, which has an underwater section. World 8 is the only world in Super Mario Bros. without any checkpoints; the player is sent to the start of the level if defeated.

Level maps
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Trivia

 * A minor change to the soundtrack occurred between the original NES version and the All Stars version. In the underwater section of World 8-4, the music switches to the underwater theme, but only in the NES version, as the All-Stars version keeps the castle theme for the whole level.