A video gambling machine may not be played between the hours of 2 a.m. and 8 a.m. each day. However, in the jurisdiction of a local government where a game is played, the local government may adopt an ordinance allowing play between 2 a.m. and 8 a.m.
Video Gambling Machines -- Hours Of Play
Mont. Code Ann. § 23-5-620, under Video Gaming Machine Control Law.
Mont. Code Ann. § 23-5-620