This article explains how reel electronic gambling machines (EGMs) have been designed to mislead players and have directly contributed to the high rate of problem gambling: “Unbalanced reel design must be a major factor, if not the major factor, in the maintenance of problem gambling principally because the gambler unconsciously believes he or she cannot lose.” Unlike table games, EGMs offer widely different odds of winning, which the authors compare to loaded dice or rigged carnival games. “The fact that the players do not know the rules makes the reel gambling machine unique amongst gaming devices. Not only are the players ignorant of the rules but the rules vary from machine to machine and neither the gaming industry nor the regulators disclose them. As far as transparency is concerned, the standards applicable to reel gaming machines are totally out of step with all other forms of gaming.” The authors make a strong case for establishing uniform standards, banning biased, “virtually-mapped” reels on EGMs and providing more transparency regarding the player’s chances of winning.