World 4-6 is the eighth level of World 4. It can be unlocked by clearing World 4-5.
In this level, Mario will ride another Dorrie, who is slightly larger than the one from World 4-1, to avoid the poison. To get the first Star Coin, Mario should jump onto land, past the Red Ring. When on land, the player should keep up the pace with Dorrie. The second Star Coin is obtained by pressing a P Switch, and then jumping to collect it. Soon, the player should see a ! Switch. Mario should wait for Dorrie's head to go up, and then he should jump and press the switch so he can go into a pipe that contains the final Star Coin. Soon, Mario should reach the pole.
- Star Coin 1 - Mario should jump onto the area directly after the Red Ring to get the Star Coin.
- Star Coin 2 - Mario should hit the P Switch to turn all the nearby blocks into coins, where the Star Coin can be easily reached.
- Star Coin 3 - Mario should the red ! Switch and quickly enter the pipe. Then, he should slide down the slope while taking out all the enemies. The Star Coin is in the middle of a mass of coins.