Luigi's back and playable in Super Mario Galaxy 2 - check out new footage of the title inside!

While we've known for a while that Mario's green-clad brother would be returning in Galaxy 2, we've got official confirmation today in this brand new trailer. Once again, Luigi appears fully playable throughout the entire game - but will he be selectable earlier on, or just after the title is completed as before?

For those that missed it, here's a look at Planet Mario, the game's smaller hub area:

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