Super Mario All Stars is a collection of Super Mario platforming video games developed and published by Nintendo for the Super Nintendo Entertainment System in 1993. The game contains enhanced remakes of Super Mario Bros., Super Mario Bros. 2, Super Mario Bros. 3, and Super Mario Bros. The Lost Levels, the latter of which was the original Japanese version of Super Mario Bros. 2 which was never released outside Japan prior to this compilation. The games are all developed to take advantage of the Super NES hardware, featuring updated graphics and sounds and additional save mechanisms. A second version of the compilation, which includes Super Mario World as a playable title, was released outside Japan in December 1994.