World 3 (Super Mario Bros.)

World 3 is the first world in the Super Mario Bros. to be set at nighttime. This world also introduces the Hammer Bros. This world consists of two ground levels, one level set at the heights, and one Castle.

Level maps
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Trivia

 * Though the world is set at night, no objects' colors are affected. As a result, in Hard Mode, the Buzzy Beetles are almost invisible.

Welt 3 (Super Mario Bros.)