The casino differentiates chips by colour and value. The bets are in the form of chips, each with a particular value which are placed onto the roulette layout. When playing live roulette, you first place your bets before the spin. An online casino uses RNG software to determine where the ball stops. In live roulette a roulette dealer controls the table, they spin the wheel, clear the losing bets and pay the winners. First and foremost the most basic detail to playing online roulette is to understand that you a placing a bet on which number of the wheel the roulette ball will land.