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
 * Venus Fire Traps
 * Hammer Bros.
 * Dry Bones
 * Urchins
 * Cheep-Cheeps
 * Mega Cheep-Cheeps
 * Spiny Cheep-Cheeps
 * Deep-Cheeps
 * Mega Deep-Cheeps
 * Eep-Cheeps
 * Clampies
 * Thwomps
 * Super Thwomps
 * Larry Koopa (Boss)