Players purchase special roulette chips, each player with his own color, so that the dealer can tell who made a winning bet and pay off that player. The chips generally have a set value of 25 or 50 cents. A stack of twenty 25-cent chips is valued at $5.00, and a stack of twenty 50-cent chips is worth $10. Usually it takes a minimum of $20 to buy-in at the roulette table.

A player may request whatever value he wishes for his chips, above the 25 cent or 50 cent standard amount. The dealer will specify the worth of that particular colored chip by mating a sample chip which is placed upon the rim of the wheel. Players may also bet larger amounts by using $1, $5 and $25 regular.

It is important to note that these roulette chips must be cashed in at the table. They  may not be removed from the table when the player leaves.

The betting layout starts with numbers 0 and  00 at the top, then extends from numbers 1 through 36 at the far end of the table. This area is referred to as the "inside" betting area. Inside bets consist of the following: single-number bets, including the 0, 00 and 1 through 36, are made by placing your chip in the center of the number you select. If that  number wins you'll receive 35 to 1 for every chip you have bet. Actually, you can pick up a total of 36 chips which includes your original  bet. Additional combinations in this "inside"  betting area are: one chip on a six number bet (pays 5 to 1); one chip on any four connecting numbers (pays 8 to 1); one chip on any connecting group of three numbers (11-1); one chip place between two connecting numbers (17-to-1).

The "outside" betting area consists of odd or even bets which pay even money. Red or black also pays even odds. A bet on 1 to 18, or 19 to 36, pays even money. You will get 2-to-1 odds if you select the winning number within the first, second or third dozen numbers. The same 2 to 1 odds are given for selecting any of the numbers in the three vertical columns of 12 numbers, located on one end of the betting surface. For outside bets, the dealer will lay your winning chips alongside your original bet. It is up to you to pick up both your winnings and your original bet after the payoff. All inside bets are paid by the dealer, directly to you. As mentioned. the dealer knows you are the winner by the color of your chips. In many instances, more than one colored chip is on a winning number. Again, your original bet is left on the number or combination of numbers and it is up to you to reclaim that bet. Naturally, you can let it ride again on the next roll or even add other chips from your winnings.

Understanding the Wheel
The perfectly balanced roulette wheel consists of 38 identical slots, individually numbered from 0, 00, 1 through 36. In total, 38 numbers are represented on the betting layout.
Each game begins when the dealer (sometimes called croupier) spins the wheel in one direction, and then rolls a little ivory ball along the inner edge of the wheel in the opposite direction. As the wheel turns, the ball loses momentum. It bounces among the slots and finally falls into one of the numbered slots. That number is the declared winner for that game. Incidentally, there are about 90 spins or games played per hour, on average.
The standard roulette wheel that the numbers are not consecutively arranged around the wheel. By design, they alternate between red and black and exactly opposite each other number is the corresponding higher and lower number.

The house edge is set at 5.26%, resulting  from the player receiving odds of 35 to 1 rather than the true odds of 1 in 36 or 37 to 1. All in all, that edge is comparable to the "rake" in poker, and in some bets on the craps table, in baccarat and other games
including sports betting. The single-0 European roulette wheel has a house edge of only 2.70%. The player has a 1 in 37 chance of winning and still gets 35 to 1.

Some casinos use the en prison rule where, when a zero or double zero occurs, all even- money bets are help (or only one-half taken) depending upon the outcome of the next spin.

**Most American Casinos treat 0 and 00 as a regular number.**