In May. Four Bears Casino & Lodge, Four Bears Village · McKenzie · North Dakota, Native American, Owned by the Mandan, Hidatsa, and Arikara Nation · Prairie Knights. The casino is located 46 miles south of Mandan, ND on. Prairie Knights Casino is an Indian gaming casino owned by the Standing Rock Sioux Tribe. The Mandan are a Native American tribe of the Great Plains who have lived for centuries primarily in what is now North Dakota. The gaming arm of Connecticut's Mohegan Indian Tribe has been operating the casino at the off-Strip Virgin Hotels Las Vegas since March. They are enrolled in the. The tribe is adding an events center to the 4 Bears Casino and Lodge in New Town. Prairie Knights Casino is the premier North Dakota casino near Bismarck and Mandan, ND. The 85, square-foot area with seating for up to 4, 4 Bears Casino & Lodge in New Town, ND, is the winning destination for gaming, fine dining, big-name entertainment and luxurious lodging. The Mandan, Hidatsa and Arikara Nation, also known as the Three Affiliated Tribes, is located on the Fort Berthold Indian Reservation in central North Dakota. The casino features two restaurants, a luxury hotel and a concert. . In the Upper Peninsula of Michigan, one tribe saw its gambling revenue decline sharply last year because of chaos in the online betting business.