I think roulette games are typically seen as a game of chance as the outcome of each spin is determined by random chance rather than any skill or strategy on the part of the player. While players can choose which numbers or colors they bet on, the outcome of each spin is determined by the position of the ball on the spinning wheel, which cannot be predicted with certainty. As such, roulette is considered a game of pure luck rather than a game where players can influence the outcome through their own actions or decisions.