Basics - New Super Mario Wii Guide - IGN

Some levels have secret goals -- they look like red versions of the flags at the end of a level -- which lead to Warp Cannons, Mushroom Houses, secret levels

New Super Mario Wii Guide - IGN

New Super Mario Bros. U Deluxe - IGN

World 7-2 - New Super Mario Wii Guide - IGN

World 1-3 - New Super Mario Wii Guide - IGN

New Super Mario Bros. U Map - World - IGN

World 9-1 - New Super Mario Wii Guide - IGN

World 2-Fortress - New Super Mario Wii Guide - IGN

World 3-3 - New Super Mario Wii Guide - IGN

World 9-2 - New Super Mario Wii Guide - IGN

Mario & Luigi: Dream Team (for Nintendo 3DS) Review

World 4-1 - New Super Mario Wii Guide - IGN