This is the third world. You have to be careful with the ice floor. The good thing is that here debuts the polar suit, which transforms Mario into Mario Penguin.The boss is Lemmy Koopa,the fortune is to bounce on his balls. But this only serves in the rematch. Yoshi appears in the world 3-2.
- There are 5 Normal Levels (Yoshi is found at level 3-2 and is very well hidden).
- Ice Brothers on the road (2 levels, after level 2 and 3)
- A House of Ghosts (after level 2 and 3).
- A Tower (after level 2 and 3 and the House of Ghosts), where you face for the 1st time against Lemmy Koopa (in a room with the floor frozen and two wells on the sides). The boss throws bouncing balls in order to make you fall down the hole.
- Two red switches (after level 5) Make red boxes appear at level 4 and 5 to find the normal level 4 goal and secret goal of level 5.
- A Castle (after level 4), where you face for the 2nd time against Lemmy Koopa (on a floor with the floor frozen and two wells on the sides). The boss gets a giant ball.
- A secret canyon (after the House of Ghosts). To get there it is necessary to find the secret exit of the Ghost House. It takes you to the world 6.