Mini-Mega Island, or World B, is the second secret world in Newer Super Mario Bros. Wii. it is a grassy island with a "big and small" theme. It is unlocked by completing the secret exit in Pillar Pass in world 2. Completing the fortress will unlock a shortcut to Bubble Basin in world 3. This world's name is related to Super Mario 64's Tiny-Huge Island


The first level has the World 5 background from New Super Mario Bros Wii, and the rest of the levels have the background of world 1 in nsmbw.


B-1: Mighty Meadow

B-2: Pintsized Plains

B-3: Troopashell Track

B-4: Cheepcheep Creek

B-Fortress: Formidable Fortress


  • The music in the normal levels are a remix of the theme for World 1 from New Super Mario Bros. Wii. In fact most of this world has the background of world 1.

Other Buildings

Other buildings in Mini-Mega Island:

  • The Minimega Music House is the official Music House for World B. It can be accessed through completing B-2.