We’ve seen just a little bit of the co-op 2-player mode in Super Mario Galaxy in the recent trailers, but now Nintendo has the official word on how it works:

Don’t want to head into space alone? With a second Wii Remote, another player can play alongside by pointing at and collecting bits of stardust, then launching them at enemies. The second player can even sweep aside projectiles or stall enemies to help make Mario’s adventure easier.

Pretty cool idea!  Now anyone can get involved in the newest Mario adventure!

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