Purple Coins on the Puzzle Cube

Purple Coins on the Puzzle Cube is the fifth mission of the Gusty Garden Galaxy in Super Mario Galaxy. Until its completion, this mission can only be done while a Purple Comet is in orbit.

Layout
A hundred fifty Purple Coins are scattered around the Puzzle Cube planet, and the player has two minutes and thirty seconds to collect at least a hundred of them. Once a hundred of the Purple Coins are collected, the Power Star will appear back at the starting area with the fountain, and the player has to make it back within the time remaining.

Trivia

 * In the Nvidia Shield version of Super Mario Galaxy, three Purple Coins are erroneously placed inside a wall and can only be obtained by Ground Pounding near them because of Mario's and Luigi's wider hitbox during the move. This error was later present in the Super Mario 3D All-Stars version prior to version 1.1.0.