Mario's Early Years! Fun with Letters is one of several educational games of the Mario franchise. Developed by The Software Toolworks and published by Nintendo, this game was released for the PC in 1993 and Super Nintendo Entertainment System in 1994. It was produced as a predecessor to Mario's Early Years! Fun with Numbers and Mario's Early Years! Preschool Fun. The concept of all three games is largely identical; they only differ in which tasks the player has to fulfill.