Roulette was developed around the turn of the century and is one of the most popular gambling games in the world. It is played in virtually every gambling house in North and South America and in Europe, where it is even more popular. An American roulette wheel has an extra slot; 00. A European roulette wheel has the numbers 1-36, plus a slot for zero. Single numbers pay the highest, while either/or bets are lowest. In a casino, the person who spins the wheel is called a croupier. The roulette chips are worthless at the other tables in the same casino, so do not bother trying to stack them under your blackjack chips or anything foolish like that. The dealer spins the roulette wheel in one direction and the small ball in the opposite one. If the dreaded 00 is spun, the House keeps all the bets. The roulette ball falls into one of the wheel's numbered compartments which determines the winning number. After the roulette wheel stops the dealer will then mark the winning number on the betting area and the bets are paid accordingly. Once the roulette ball has found its slot, the dealer will call out the winning number and place a marker on that number's spot on the layout. You should remember to exchange the colored non-value Roulette chips for valued gaming chips prior to leaving a particular Roulette table. When you finish beating the house at roulette, you will have to ask the dealer to "color out" for you, the dealer will then take your chips and give you casino checks which you may then use on other games or cash out at the cashier.