Super Mario Bros. X is a fan-made Mario game that borrows from all the previous Mario games (including “Mario Paint” and surprisingly, Metroid). For fans of oldschool Nintendo, it’s pure nostalgia:

[yt src="http://www.youtube.com/watch?v=8W1_OBKqHG4" width="600" height="400"]

Play it at http://www.supermariobrothers.org/