


The level is made up of long bridges the player must run and jump across while avoiding an endless array of jumping Cheep-cheeps. World 7-3's layout is similar to World 2-3's, but with added Koopa Troopas and Koopa Paratroopas that are placed on the various bridges, along with additional Cheep-cheeps. Replaces Magic Mushrooms if Mario is Super Mario.

Replaced by Fire Flowers if Mario is already Super Mario. Above one of the gaps before the fake Bowser.High above the right side of the lava pit.The Yoshi Egg is found in a Hidden Block above the Empty Block before the fake Bowser, and the score to beat is 14000 (13000 in the Japanese version ). Next are two lifts moving in opposite vertical directions, followed by some gaps before coming to the fake Bowser, which breathes fire as the player is jumping across the gaps. After the lava are two paths lined with Fire-Bars, with the top path having more than the bottom. Above the center platform is the only ? Block in the level, containing a power-up. The player starts at the top of some stairs that lead to a pit of lava with Podoboos jumping out and platforms placed above it.
