World 1 (New Super Mario Bros. Wii)

World 1 is the first world in New Super Mario Bros. Wii. World 1 is occupied by Larry Koopa, the first boss to be fought in the game. This world features typical grassy plains with many colorful mushroom hills, similar to New Super Mario Bros. It has eight levels, three Toad Houses, and a cannon. The enemy course features Goombas in three different sizes.

New Enemies

 * Goombas
 * Koopa Troopas
 * Koopa Paratroopas
 * Piranha Plants
 * Fire Piranha Plants
 * Hammer Bros.
 * Dry Bones
 * Urchins
 * Cheep Cheeps
 * Big Cheep Cheeps
 * Spiny Cheep Cheeps
 * Deep Cheeps
 * Big Deep Cheeps
 * Eep Cheeps
 * Clampies
 * Thwomps
 * Super Thwomps
 * Larry Koopa (Boss)