Slot devices are typically programmed to pay for out as winnings 0% to ninety nine% of the money that is wagered by gamers. This is called the "theoretical payout share" or RTP, "return to participant". The minimum theoretical payout share varies among the jurisdictions and is typically recognized by law https://www.crackingdrupal.com/errata/do-you-have-business-and-need-have-advertise-it-test-article-advertising-advice-number-29-420