Super Mario Galaxy

Super Mario Galaxy is a 3D platformer for the Wii. In it, miniature planets are the platforms, where Wii's Controller is used to go from planet to planet, as well as bat away objects. Mario is controlled with the Nunchuk attachment's Analog stick.

Super Mario Galaxy received universal acclaim, with many reviewers deeming it among the greatest games of all time.

Gameplay
Super Mario Galaxy is a 3D platformer set in outer space. Taking control of Mario, the player travels to different galaxies in order to collect Power Stars. The galaxies themselves consist of various planetoids for the player to explore, all of which have their own gravitational field. This allows Mario to circumnavigate most of the planetoids he lands on, and jump from one planetoid to the next.

Co-Star Mode
"Co-Star Mode" is a form of limited co-op. In this mode, one player controls Mario, while the other uses the Wii Remote to control a second pointer on screen, allowing them to gather Star Bits and shoot them at enemies.

Super Luigi Galaxy
"Super Luigi Galaxy" is a gameplay mode unlocked after collecting all 120 Power Stars and defeating Bowser a second time. As the name suggests, Mario is replaced with Luigi, and the player can collect all of the Power Stars again. Luigi has slightly different controls than Mario: he has a higher maximum speed and jump height, but he has less traction and longer acceleration.

Plot
Mario is invited by Princess Peach to the Star Festival, which is held once a century to celebrate the arrival of a comet. Shortly after he arrives, the festival is interrupted by Bowser, who attacks the Mushroom Kingdom in his armada of airships. "Inviting" Peach to the creation of his new galaxy, he summons a massive UFO to rip Peach's Castle from the ground. Mario manages to reach the base of the castle before it is pulled into outer space, but he is blasted away by Kamek. Mario awakens on a small planet, where he meets the Lumas, star-shaped aliens, and a woman named Rosalina whom they call their mother. Rosalina, a protector of the cosmos, has traveled across the universe in her Comet Observatory until it was attacked by Bowser, who robbed the Observatory of the Power Stars it used as a fuel source, rendering it powerless. Rosalina gives Mario one of the Lumas, allowing him to travel through space, and he sets off to collect Power Stars to restore the Observatory.

Mario travels throughout the universe, encountering allies (such as his brother Luigi and a brigade of Toads) and enemies (including Bowser and his army) as he searches for Power Stars. After collecting enough Power Stars, Rosalina brings the observatory to the center of the universe, where Bowser is holding Peach captive. Bowser reveals that he is creating a new galaxy from the Power Stars he stole, and intends to rule the entire universe from this galaxy with Peach at his side. Mario defeats Bowser and rescues Peach, but the aftermath causes one of the galaxies' planets to collapse into a black hole. To stop the black hole from consuming the entire universe, the Lumas throw themselves into it, destroying it and creating a supernova.

Rosalina then appears to Mario, explaining that all stars will be reborn upon their death. Mario awakens in the restored Mushroom Kingdom, alongside Peach, Bowser, and all of the beings he encountered along his journey. Looking into the sky, Mario revels at the new galaxies that have been born.

Development
The concept for Super Mario Galaxy originated from the Super Mario 128 tech-demo, namely the implementation of spherical platforms.

Reception
Super Mario Galaxy received universal critical acclaim.