Super Mario Galaxy 2 is the sequel to the popular Super Mario Galaxy game. It features new levels and galaxies that require players to use physics-based exploration, as well as gravity-defying maneuvers. Players can also team up with Yoshi and use his tongue to grab items and shoot them at enemies. Additionally, they can use a drill to tunnel through solid rock for even more fun challenges. Overall, Super Mario Galaxy 2 provides an exciting experience full of new adventures for experienced players of the original game.