Super Mario Galaxy is one of the greatest 3D Mario games of all time. However, it also further muddies Mario's story, as it gives Mario the ability to breathe in space -- and fails to explain that gift.

In this game and its sequels, Mario has no problem breathing in space. This is the opposite of Mario's appearance in Super Mario Nation 2, where he needs a proper space suit to travel on planets other than Earth. When did he become so powerful?