World 1 (Super Mario Bros. 2)

World 1 in Super Mario Bros. 2 was the first area Mario, Luigi, Peach, and Toad ventured through. It was made into three subsections. As they traveled, the heroes were attacked by Tweeters, Shy Guys, Snifits, and Pidgits. At the ends of the first two subsections, they had to face the egg-spitting Birdo. At the end of the last subsection, they had to fight Mouser.

World 1-2

 * The first one is under the level when the player gets on the Magic Carpet.
 * The next one is at the top somewhat directly under the first one.
 * The thrid one is in a cave, a Key is needed to open it.
 * This coin is seen when getting out of the cave and going left.
 * This coin is seen by the last door.