(a) Where the authorized game or system uses a random number generator (RNG) to make selections, such RNG and the selections shall:
- (1) Be statistically independent;
- (2) Conform to the desired random distribution;
- (3) Pass various recognized statistical tests;
- (4) Be unpredictable;
(5)
- (A) Be cycled continuously in the background between games and during game play at a speed that cannot be timed by the player.
- (B) It is understood that at some time during the game, the RNG may not be cycled when interrupts may be suspended however, this exception shall be kept to a minimum;
(6)
- (A) Randomly determine the first seed by an uncontrolled event.
- (B) After every game there shall be a random change in the RNG process (new seed, random timer, delay, etc.).
- (C) This will verify the RNG does not start at the same value, every time.
- (D) It is permissible not to use a random seed.
- (E) However, the manufacturer must ensure that games will not synchronize;
- (7) If a random number with a range shorter than that provided by the RNG is required for some purpose within the EGS, the method of rescaling, (i.e., converting the number to the lower range), is to be designed in such a way that all numbers within the lower range are equally probable;
- (8) If a particular random number selected is outside the range of equal distribution of rescaling values, it is permissible to discard that random number and select the next in sequence, or some other acceptable method, for the purpose of rescaling;
(9)
- (A) Unless otherwise denoted on the payglass, where the EGS plays a game that is recognizable such as poker, blackjack, etc., the same probabilities associated with the live game shall be evident in the simulated game.
- (B) For example, the odds of drawing a specific card or cards in poker shall be the same in the live game as if a physical deck of cards were being used.
- (C) Card games also must meet the following:
(i) Cards once removed from the deck shall not be returned to the deck except as provided by the rules of the game depicted;
(ii) As cards are removed from the deck they shall be immediately used as directed by the rules of the game (i.e., the cards are not to be discarded due to adaptive behavior by the EGS);
(iii) At the start of each game/hand, it is recommended that the first hand of cards shall be drawn from a randomly-shuffled deck; and
- (iv) The replacement cards shall not be drawn until needed;
(10)
- (A) Where used, games that use the laws of physics to generate the outcome of the game (mechanical-based RNG games) must meet the randomness requirements of this document with the exception of the regulations stated above that are applicable only to electronic RNGs.
- (B) Mechanical-based RNG games must be constructed of materials to prevent decomposition of any component over time (e.g., a ball shall not disintegrate).
- (C) The laboratory reserves the right to require replacement parts after a predetermined amount of time for the game to comply with this rule and the device or devices may require periodic inspections to ensure the integrity of the components of the device;
- (11) The properties of physical items used to choose the selection shall not be altered, and the player shall not have the ability to physically interact or come into physical contact or manipulate the machine physically with the mechanical portion of the game;
- (12) Each possible permutation or combination of game elements that produces winning or losing game outcomes shall be available for random selection at the initiation of each play, unless otherwise denoted by the game;
- (13) An EGS shall use appropriate communication protocols to protect the RNG and random selection process from influence by associated equipment, which may be communicating with the EGS;
(14)
- (A) All combinations and outcomes shall be available.
- (B) Each possible permutation or combination of game elements that produces winning or losing game outcomes shall be available for random selection at the initiation of each play, unless otherwise denoted by the game rules;
(15)
- (A) No near miss.
- (B) After selection of the game outcome, the EGS gaming device shall not make a variable secondary decision, which affects the result shown to the player or gives the impression that the player is getting close to a win, or in any way gives a false impression that the chance to win is improved by another play;
(16)
- (A) For instance, the random number generator chooses an outcome that the game will be a loser.
- (B) The game shall not substitute a particular type of loser to show to the player; and
(17)
- (A) No corruption from associated equipment.
- (B) An EGS shall use appropriate communication protocols to protect the random number generator and random selection process from influence by associated equipment, which may be communicating with the gaming device.