While New Super Mario Bros. Wii is out in North America, Japan has to wait a few more weeks to play as Penguin Mario. Nintendo is hyping it overseas with a set of commercials focusing on different features.
Notice how both people were playing the game alone? The biggest highlight in New Super Mario Bros. Wii here is cooperative multiplayer. In Japan, the last TV commercial highlights how easy it is to get into. Here’s the TV ad running in the States for comparison.