How is the outcome of the game decided? In both real money and play for fun modes, a Random Number Generator (RNG) determines the outcome of a game. In any card game, the computer will re-shuffle all the cards before each hand is dealt. Related articles How to Convert your Casino Loyalty Points? Casino - How Does William Hill Test The Games For Fairness? How do I uninstall Casino Software? Game Fairness at William Hill What does RTP (Return To Player) mean?