Super Mario Galaxy 2

Super Mario Galaxy 2​ (スーパーマリオギャラクシー2) is an upcoming platform game in development for the Nintendo Wii. It was first announced at E3 2009, and is the sequel to Super Mario Galaxy. It will be released in North America on May 23, 2010, Japan on May 27, 2010, and Europe on June 11, 2010. The game's levels are galaxies filled with minor planets and worlds. While its gameplay is based on that of its predecessor, the game has been updated with gravity effects and new power-ups. It is the fourth 3D platformer in the series, after Super Mario 64, Super Mario Sunshine, and Super Mario Galaxy.

At the start of the story, Princess Peach invites Mario to watch the Star Festival, a time when stars are showering over Mushroom Kingdom. When Mario comes to the castle, he sees Bowser, who has grown in size from harnessing the power of the stars, attacking and capturing Peach. As Bowser escapes, Mario launches into outer space in pursuit.