Randomness in games ensures fairness by eliminating predictability, reducing skill advantage, preventing manipulation, creating equal opportunities, and enhancing unpredictability. By introducing unpredictable outcomes, randomness prevents players from exploiting patterns, making it harder for skilled players to dominate and giving weaker players a chance to succeed. Additionally, randomness makes it difficult for players or developers to manipulate outcomes, creating a more level playing field. Overall, randomness enhances the gaming experience, making it more exciting and engaging for all players, and ensuring that everyone has an equal chance to win.