World 1-3 is the third level in New Super Mario Bros. Wii. This is the first level to feature Yoshi as well as Hammer Bros. It is unlocked by completing World 1-2. Finding the normal goal unlocks World 1-Tower and a Yellow Toad House, while finding
VS. Super Mario Bros. - Super Mario Wiki, the Mario encyclopedia
World 6-5 (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia
World 3-3 (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia
World 2-3 (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia
World 1-Castle (New Super Mario Bros.) - Super Mario Wiki, the Mario encyclopedia
World 1-3 - New Super Mario Wii Guide - IGN
New Super Mario Bros. Wii - Super Mario Wiki, the Mario encyclopedia
New Super Mario Bros. - Wikipedia
New Super Mario Bros. Wii, MarioWiki
World 7-6 (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia
World Coin-3 (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia
World 7-Castle (New Super Mario Bros. Wii) - Super Mario Wiki, the Mario encyclopedia