Slot machines are typically programmed to pay out as winnings 0% to 99% of the money that is wagered by players. This is known as the "theoretical payout percentage" or RTP, "return to player". The minimum theoretical payout percentage varies among jurisdictions and is typically established by law or regulation.

In Blackjack, everyone plays against the dealer. Players receive all cards face up and the dealer's first card is face up and the second is face down. The object of the game is to get closer to 21 than the dealer without going over 21. If a hand goes over 21, it is called a bust  or break  and the wager is lost.