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 be done only while a Purple Comet is in orbit.

Layout
150 Purple Coins are scattered around the Puzzle Cube planet, and the player has two minutes and 30 seconds to collect at least 100 of them. Once 100 of the Purple Coins are collected, the Power Star appears 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 be obtained only 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.