Forget the casino robberies seen in the Ocean's 11 films; these masterminds pulled off amazing thefts in real life en route to becoming the biggest casino cheaters in history. Using gadgets, people on the inside or simple math, these men robbed casinos of millions of dollars. As glamourous as it appears in the movies, it was less than fun for these casino cheaters after they were caught.

These men found ways to beat the bank at one popular casino game or another. Hitting many of the world's largest casinos, they all found a way to scam the system. Some used technology to confuse manual and electronic slot machines, others managed to beat the system in roulette, craps, and even keno.

Some of the most notorious casino cheaters used the legal, but frowned-upon, method of card counting to win millions playing blackjack. As seen in the Kevin Spacey film 21, the practice is easy to learn, but can have extreme consequences.

However these casino cheats operated, in the end, all were caught and many were banned from casinos for life. On the bright side, many now work with casinos to improve security, to expose potential cheats, and to make the gaming world a better place.