RULE 12	GAMING DEVICES AND EQUIPMENT
47.1-1223  Meters.
(2)  	All slot machines must have the following soft meters. These meters are displayed in dollars and cents.
(a)  	Coin in. The machine must have a meter specifically labeled “Coin In” that accumulates for all wagers made no matter the form in which the wager was made. The Coin In meter must accumulate the total value of all wagers (coins, tokens, currency, tickets, or any other means of placing a wager). This meter shall:
(i)  	For multi-game and multi-denomination/multi-game machines, provide the information necessary, on a per paytable basis, to calculate a weighted average theoretical payback percentage; and
(ii)  	For machines which contain paytables with a difference in theoretical payback percentage which exceeds four percent between wager categories, maintain and display coin in meters and the associated theoretical payback percentage, for each wager category with a different theoretical payback percentage, and calculate a weighted average theoretical payback percentage for that paytable.
47.1-1233    Rules of play
(6)    	Slot machine games may award additional free play, known as “bonus play,”  and includes free spins, re-spins, or other games or events with similar or different play as the base game. Bonus play may be player initiated, or automatic. The game must clearly indicate when it is in bonus play, as opposed to normal play mode.
(a)    	If bonus play is player initiated, and player selection is time limited, the paytable must explain the time-out parameter. If the player fails to take the required action before the expiration of the required time, the game may initiate the selection.
(b)    	If bonus play uses a terminator or other element to cause play to terminate, the paytable must define and explain the terminator.
(c)    	The bonus play may offer the player alternative hidden selections, known as “take or risk”  selections. Once the player makes a selection, and its value is revealed to the player, the game may offer the player the opportunity to forego the selection in lieu of another hidden selection, under the following conditions:
(i)    	The amounts “offered” to the player are not transferred to the player's win meter until the player has either exhausted all available opportunities, or the player has affirmatively chosen to keep the award revealed in lieu of another hidden selection.
(ii)    	The player cannot risk or lose any base game awards transferred to the win meter.
(iii)    	The paytable must fully explain the take or risk functionality and expected player behavior.
(iv)   	The game must explain how many risk attempts the player will receive,
(v)	The player must have a means of clearly communicating the player's decision to the game.
(vi)	“Double-up” offers are prohibited.