World 9-3 (New Super Mario Bros. Wii)

This course has the background of World 6 and is unlocked by collecting all the Star Coins from World 3. It features Missile Bills and Missile Banzai Bills. POW Blocks cannot defeat these enemies. The floor resembles that of World 7-2.

Enemies

 * Missile Bills
 * Missile Banzai Bills
 * Bill Blasters
 * Koopa Troopas
 * Koopa Paratroopas

Trivia

 * Although the Missile Banzai Bill appears in this level, it is never seen being fired from a Banzai Bill Blaster.