Roulette is a casino game of chance that has been played for centuries. The term ārouletteā is French in origin, and literally translates as ālittle wheel.ā The game's popularity has spread across the world, and it is now one of the most popular games at land-based and online casinos. Roulette involves players betting on where a small ball will land after being spun around a wheel, which is divided into a variety of numbered and colored pockets.