It transforms Mario into Boomerang Mario, similar to Hammer Mario. They can be found lying on the ground, inside of ? Blocks, and after defeating some Boomerang Bros. After obtaining it, Mario can throw a boomerang to defeat enemies and reach items from a far distance. However, Mario can only throw one boomerang at a time and is forced to wait for his first boomerang to return or disappear before throwing another. This power-up first appears in World 5-1 in Super Mario 3D Land.
- Mario's boomerang is now red, in Super Mario 3D land it was blue.