Roulette is a casino game where a player can place wagers on winning numbers or colors. The wheel is divided into many numbered and colored slots, many of which also contain extra slots colored in red and black. The numbers range from 0 to 36 in most cases, and some versions have a double zero (00) slot. Players can bet on single numbers, a combination of numbers, or a color. When the wheel is spun, a ball will randomly bounce around until it lands in one of the slots. The winning wager is the one that is bet on the slot which the ball landed in.