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. Mario will need to turn all the Flip Switches yellow to gain the star. The only enemies here are Burn Bits. 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. Cosmic Clones appear during said 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.

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, Mario will end up on a 8-Bit Luigi Planet. To complete this mission, Mario has to get all of the purple coins found on this planet within two minutes. He must also avoid the Cosmic Clones chasing him. If done so, he'll get a Power Star.