For example, slots usually contribute 100%, while table games like Blackjack might contribute only 10-20%. Type of Games: Some games contribute more to the wagering requirement than others. Make sure the games you intend to play are eligible for the bonus you're considering. Some bonuses can only be used on specific games. Lower wagering requirements are generally more favorable. Also known as playthrough requirements, this indicates the number of times you must wager the bonus amount before you can withdraw any winnings.