Mario's back! Bigger and badder than ever before! This time it's a fierce action- packed battle to free the land of Subcon from the curse of the evil Wart. It's up to. Super Mario Bros. 2 is a 2D side-scrolling platform game. The objective of the game is to navigate the player's character through the dream world Subcon and. You are playing Super Mario Bros. 2 from the Nintendo NES games on play retro games where you can play for free in your browser with Retro Games Online.