There was a time when each level in a Mario game would have its own recognizable, hummable tune. These days, however, Mario games will very often have one main new theme which weaves its way throughout the entire game in various forms. Classic tunes often pop up again, fully remixed, and sound effects are always energetic and full of personality. But more or less there’s usually one extremely memorable new main theme for each new game. These are the ones that you’ll remember in five years from now.