Super Mario Draw Run is one of those simple but weirdly addictive Flash games where you sketch a path for Mario to run across. At first, it seems easy—just scribble a line, right? But then you realize the gaps are too wide, or you accidentally drew him straight into a Goomba. Oops.

You’ve got to think ahead—where the coins are, where the pits drop off, even how steep your slopes are. Mess up and Mario goes tumbling. Get it right, though, and it’s oddly satisfying watching him zip along your custom route like some kind of mustachioed roller coaster. Just don’t get too cocky—those later levels get sneaky with their traps.