Make your own Super Mario Bros. game! Its Super Mario Bros. with enhanced physics, gameplay, and graphics. Plus, it comes with a built-in level editor that allows you to make your own "Game Paks" to add your own level designs into the Super Mario Bros. mix. Load your your Custom Game Pak from the main menu, and start off on your own Mario adventure! Beat it, then make some more! Or share them with friends.
A test of the level editor. You can add your own graphics. Here I made a level using Cave Story's tileset.