Infinite Mario randomly generates a new world each time you play the game. So every time you fire it up, you're having a unique experience. The generated worlds follow the Super Mario Bros. 3 and Super Mario World format of having a defined overworld map with levels, shortcuts, and what not to traverse through. The stages themselves are modeled after Super Mario World itself which everyone knows is the best Mario Bros. game ever made!
Arrow keys: Move
S: Jump / select stage