Super Mario Galaxy 2 is a platform video game developed by Nintendo for the Wii console. Released in 2010, it is a sequel to the original Super Mario Galaxy. Players control Mario as he travels across various planets and galaxies to rescue Princess Peach from Bowser. The game features innovative gravity mechanics and a variety of power-ups. The gameplay includes collecting Power Stars to unlock new levels and challenges. Players can also control Yoshi, who helps Mario navigate through obstacles. With its vibrant graphics and creative level design, Super Mario Galaxy 2 received critical acclaim and is considered one of the best games of its generation.