All gaming Guests must be at least eighteen (18) years old to wager; proof of age may be required. Find information about Oklahoma 18+ casinos, online casinos for 18 and up Oklahoma Players, and the minimum legal gambling age in the state of OK as of. 1 List of casinos; 2 Gallery; 3 See also; 4 References; 5 External links. Downstream Casino Resort. A valid government-issued photo ID must be provided upon. This is a list of casinos in Oklahoma. I've heard there are tribal casinos that have an age limit of 18+ instead of Just moved here and some of my employees are younger than Living in Oklahoma, I've always understood it to be every casino is 18+ to “game” (the term used to get around the “sin” of gambling). River Bend Casino. More than 70 casinos in Oklahoma offer a variety of slot machines, card & table games and horse racing thrills. Oklahoma 18+ Casinos ; Sugar Creek Casino, N Broadway Ave, Hinton, OK , 18+ ; Teepee Casino, East 6th Street, Yale, OK , 18+ ; Texoma Casino. . Hard Rock Hotel & Casino Tulsa. Get the details on Oklahoma WinStar World. Chisholm Trail Casino. Choctaw Casino Resort. River Spirit Casino Resort. WinStar World Casino and Resort. Choctaw Casino: You can play at 18 yrs old here - See traveler reviews, 10 candid photos, and great deals for Pocola, OK, at Tripadvisor. Riverwind Casino. Contents. Indigo Sky Casino & Hotel.