I can only think of 3 other 4 player co-op 2-D platformers that have ever been made. This game will be huge, and will outsell Galaxy 1 and 2 combined easily.
I know several people who stopped playing games because they got too complicated when they went 3-D and needed analog sticks and camera controls and several buttons. But they're not into handheld gaming. A 4 player co-op 2-D platformer is just what they need. It can convert the folks who didn't like Wii Sports.
@OP, yes this game will boost hardware. All these Nintendo smash hits are evergreen titles, and they just keep stacking on top of each other. It used to be that Christmas was all about Wii Sports, Wii Play, Wii Fit, Mario Kart Wii, Mario Galaxy, and Brawl. Now it's all about the next generation: Wii Sports Resort and Motion+, Wii Fit+, Metroid Prime Trilogy, Mario and Sonic 2 (with balance board), and New SMB Wii, with a price cut. It will be impossible to tell all these ridiculous spikes apart, but lord knows we'll try. And Wii has the most exclusives, and the best versions of Tiger Woods and Shaun White, and the best selling Beatles game. And if you want cheerleading games, well, there's really nowhere else to turn. Nintendo's got you by the balls.
This Christmas will be huge, but I think New SMB Wii will be the best selling game this Christmas.












