In all traditional varieties of roulette involved balls. In an online casino, the winning numbers are chosen by a random number generator, and the image of the ball is presented to give realism to the process.
Ball – a small ball used on roulette to determine the winning number.
Usually, the balls are made of ivory, Teflon and other material. It depends on how the ball behaves during the spin. So, Teflon samples are jumpier and less predictable.
Traditionally, the dealer runs them on the roulette track alternately in different sides, although not in all institutions this approach is mandatory.
There are varieties of roulette with several balls.