Super Mario All-Stars was one
of the first enhanced remakes. The graphics were recolored and enhanced
for the Super Nintendo, and many bugs from the original versions
were fixed. Gameplay has also been streamlined. The sounds and
background music were enhanced from their original representations. A
save feature was added to all of the games. Super Mario Bros. 2 was given the most enhancements. The Bowser encounter themes in Super Mario Bros. and Super Mario Bros.: The Lost Levels are unique to Super Mario All-Stars. Super Mario Bros: The Lost Levels is the Super Famicom/Super NES version of the Japanese Super Mario Bros. 2, which was originally released for the Nintendo Family Computer in Japan in 1986.