Roulette is the best-known symbol of casino. Roulette is so popular because of its luxury,passion and simple rules. The world 'roulette' means 'a small wheel' in French. The primitive version of the game was introduced by Blaise Pascal in the 17th century. The single zero Roulette was introduced in 1842 by Frenchmen Francois and Louis Blank. In the 19th century casino gambling was forbidden in France, that's why the game wasn't so well-known in France, but it was very popular in Hamburg and Germany. Later the game of Roulette was brought back to France and the Prince of Monaco loved this game a lot. In the 1800s the game of Roulette was introduced to the US public. The improvements were deleted, and a double "00" returned. Roulette was very popular among Americans.

There are 36 numbers, which are divided among red or black pockets on the Roulette wheel. The ball will land in one of the pockets. In addition to the 36 red and black pockets, there are either 1 or 2 green pockets, containing the number zero and double zero (00) on the roulette wheel.
A roulette dealer (usually referred to as "croupier" spins the wheel counter clockwise and releases what is usually a plastic ball along the track that runs along the top of the wheel's cavity. The wheel loses speed and as a result the ball comes down from the track, bounces a little and then lands in one of the pockets.