Last Week, GameGrep Playstation 3 says (in How To: New Super Mario Bros. Wii Tips Guide [VGB]) Unlock New Super Mario Bros. Wii's secrets with the cheats and tips in VGB's guide. This includes how to unlock hidden levels for World 9, how to make Mushroom Houses appear, and various gameplay tips for this all-new four-player Mario platformer for the Wii.

And Pedro Hernandez from Nintendo World Report says (in NEWS: New Super Mario Bros. Wii Release Trailer) Still undecided on New Super Mario Bros. Wii? This trailer might help.

And GameSpy Wii says (in How To: New Super Mario Bros. Wii: Strategies Video) New Super Mario Bros. Wii (Wii)
Nintendo's nearly-here multiplayer platformer provides a video full of tips on how to win.