Super Bell Hill, otherwise known as World 1-1, is the first course of Super Mario 3D World. Similarly to the World 1 map, the course takes place on grassy plains surrounded by water. It is unlocked from the beginning and its completion unlocks Koopa Troopa Cave.
The course introduces the Super Bell, which allows the player to become Cat Mario. The course contains Bell Trees, pools of water, and wooden bridges. Clear Pipes, Rabbits and Big Rabbits are also present, the latter giving out Mega Mushrooms when caught.