Donut Plains is the fourth main level of Donut Plains in Super Mario World and the Game Boy Advance version of Super Mario Advance 2. It has an invincible Yellow Koopa when it enters to its shell, which could harm Mario, Luigi and the Yoshis depending on where they are; even introduces the Amazing Flyin' Hammer Brothers.
It consists 300 seconds to complete the level. However, in the start introducing a supreme Yellow Koopa that could harm the Mario Bros. and the Yoshis. Entering the blue Warp Pipe, it has pipes movin very thin and normal; and has two Red Koopa Paratroopas.