20:18:17:22Software requirements for percentage payout.

The slot machine must meet the following minimum theoretical percentage payouts during the expected lifetime of the slot machine: (1) The slot machine must pay out at least 80 percent. The theoretical payout percentage is determined using standard methods of probability theory; and (2) A slot machine must have a probability of 50,000,000-to-1 or better of obtaining the maximum posted payout on the machine. This rule does not apply to a theoretical winning amount that may be won as a result of playing a series of free games which was the result of a previous award.

Source: 16 SDR 57, effective October 1, 1989; 20 SDR 113, effective January 23, 1994; 22 SDR 189, effective July 11, 1996; 25 SDR 4, effective July 27, 1998; 25 SDR 172, effective July 11, 1999; 31 SDR 165, effective May 10, 2005; 33 SDR 63, effective October 18, 2006.