When you participate in a casino tournament, the regulations will be provided to you as often as necessary. You may have to pay a buy-in. This is your entrance fee, which allows you to use a specified number of chips or spins during the event. If you run out of chips or spins, you can buy more to continue playing. At the end of the event, the player who has attained the greatest score wins the first-prize award. Some competitions offer rewards for those who made it to the top but did not take home the title.The leaderboard may be based on how much money you won playing the casino game or how many bets you placed.