World 6 (Super Mario Bros. 2)

World 6 is the sixth world in the game Super Mario Bros. 2. World 6 is a desert themed stage much like World 2. In the original game, the boss at the end was Tryclyde, who made it's appearance again from World 2, but in the GameBoy Advance remake, Super Mario Advance, it was replaced by Mouser, who is also the boss of World 1. Levels 6-1 and 6-2 feature Birdo's green form at the end, while 6-3 has red Birdo before Mouser/Tryclyde.