Super Mario Bros. 2, also known as Super Mario USA in Japan, was released for the Nintendo Entertainment System (NES) on October 9, 1988.
About three years after Bowser first invaded the Mushroom Kingdom, Mario has been having a weird dream one night in his sleep. In the dream world of Subcon, a evil king named Wart has invaded the land. Mario, Luigi, Toad, and Princess Toadstool are on a mission to investigate. There are 7 worlds with 20 levels all together.