Super Mario Galaxy
The coin system has also changed. In the previous two games, every 100 coins collected earned a life, but in Galaxy he only needs 50. Also, Mario will not be able to collect 100 coins to get a star in a level; instead, once he defeats Bowser for the last time, the player can choose to return to a level, select the "Purple Comet" star, and can try to collect 100 purple coins (not normal coins) to earn a star.