Restaurants on-site. As discussed in the section above, the legal entry age for casinos in Oklahoma is However, The legal age to gamble in Oklahoma City, OK, is 18 years. River Spirit Casino Resort · 6. Must be 18 to participate. More than 70 casinos in Oklahoma offer a variety of slot machines, card & table games and horse racing thrills. 1. Choctaw Casino Resort · 3. Guests must be actively playing with their Club Osage card. Table Game availability and live entertainment based on Casino location. · Minors are prohibited from being left unattended on the. Get the details on Oklahoma WinStar World. There are Indian casinos and gaming centers owned by 33 tribes in Oklahoma. Except otherwise stated, children under 18 years old are not allowed in casinos in. Riverwind Casino Norman, OK-9, Oklahoma City, OK , 18+ ; Sac & Fox Nation Stroud Casino, Rd, Stroud, , 18+ ; SaltCreek Casino, US-. All gaming Guests must be at least eighteen (18) years old to wager; proof of age may be required. . Riverwind Casino · 4. WinStar World Casino and Resort · 2. View Promotions Now — We provide our customers with a best-in-class gaming experience. Oklahoma has more Indian casinos than any other state in the nation. River Bend Casino · 5. There are no casinos in Oklahoma that accept year-olds. Red Hawk Gaming Center · Wetumka · Hughes ; Remington Park Racetrack & Casino · Oklahoma City · Oklahoma ; RiverStar Casino, Terral, Jefferson ; River Spirit.