Mario Squared Galaxy

Mario Squared Galaxy is a galaxy appearing in the game Super Mario Galaxy 2. It is located in World S. The galaxy takes place on an 8-Bit Mario, almost exactly like the one in Toy Time Galaxy from the first game. However, the spinning platforms are replaced with Flip Switches. An 8-Bit Luigi appears on the opposite and serves as a Purple Coin level. It keeps it trademark poisonous water, but this time, the platforms don't spin and there are only 100 Purple Coins in the mission.

8-Bit Mario Planet
This planet serves as the starting planet for most of the missions. The planet is shaped exactly like a sprite of Mario from Super Mario Bros. The green pixels are disappearing platforms, the orange pixels are lava, and the yellow pixels are Flip Switches. The Comet Medal is found at the bottom left of the planet. The only enemies here are Burn Bits.

8-Bit Luigi Planet
This planet only appears in the "Luigi's Purple Coin Chaos" mission. The planet is shaped exactly like a sprite of Luigi from Super Mario Bros. The green pixels are disappearing platforms and poisonous water while the yellow pixels are solid yellow platforms. One hundred Purple Coins are found on this planet. The only enemies here are Cosmic Clones.

Enemies

 * Burn Bits (8-Bit Mario Planet only)
 * Cosmic Clones (8-Bit Luigi Planet only)

Make Mario a Star
To complete this mission, the player has to activate all of the Flip Switches found on the 8-Bit Mario Planet to make a complete 8-Bit Mario. The player must avoid Burn Bits and the lava while doing so. After all the Flip Switches are yellow, a Power Star will appear on the platform where the player first landed.

Luigi's Purple Coin Chaos
When the Prankster Comet is unlocked, the player will end up on the 8-Bit Luigi Planet. To complete this mission, the player will need to get all of the Purple Coins found on this planet within a two minute time limit. They must also avoid the Cosmic Clones chasing them. If the player manages to obtain all the coins, the Power Star will appear where the player first landed.

Green Star 1
The player will land on the 8-Bit Mario Planet. The first Green Star is located to the top right of the level under a disappearing platform.

Green Star 2
The player will land on the 8-Bit Mario Planet. The first Green Star is located to the top left of the level under a disappearing platform.

Trivia

 * The two planets are similar to that of the Toy Time Galaxy from Super Mario Galaxy except for some minor tweaks.