World 1-1 (Super Mario Bros. 2)
World 1-1 (Chapter 1-1 in Yume Kōjō: Doki Doki Panic; titled Ready, Set, Go! or Set out on the Great Adventure!) is the first level of World 1 in Super Mario Bros. 2. As such, it is a simple level that introduces reoccurring enemies like Shyguys, Tweeters, and Ninjis. Pink Birdo is fought at the end.
World 1-1 starts with the chosen character dropping down from a doorway suspended in mid air. At the bottom of the screen, there is another doorway, which leads outside. There is an extra 1-Up disguised as a plant next to a POW on top of a hill. There is a shortcut to Birdo that can be found in the cave area halfway through the level. After climbing up the vine, instead of exiting to the right to the normal exit, the player can jump across the waterfall and use bombs to blow up blocks. After going through the door on the other side, the character proceeds to the right and Power Squat Jumps over the wall on the right side of the screen, where Birdo is faced.