Super Mario Galaxy 2 for the Nintendo Wii released today, so I've compiled the best deals for those looking to buy. The game is receiving awesome praise with many reviewers saying it's better than the original and sets a new standard for platformers. GameStop - Save $40 off Super Mario Galaxy 2 when you trade 2 select Xbox 360, PS3, or Wii games in store. If you're buying online, you can get a ... more.