Casino Arizonans have plenty of options when it comes to tribal casino gambling, with two dozen casinos strewn all across the Grand Canyon state. Casino Arizonans have plenty of options when it comes to tribal casino gambling, with two dozen casinos strewn all across the Grand Canyon state. Get Paid. Get Paid. Get Paid. . Casino Arizonans have plenty of options when it comes to tribal casino gambling, with two dozen casinos strewn all across the Grand Canyon state.