An old and unfinished project from years ago. Old instructions: "Use the arrow keys to move. Jump on the goomba, who is hard to see when it's not in the light. Also, take your time because there are pits in the level. Play in full screen and look carefully."
Old notes: "downloads.khinsider.com for music. If Mario doesn't appear to be moving, it's just because you can't see the ground scrolling."