Oklahoma is home to the largest tribal gaming industry in the nation. If you live in Oklahoma and place bets online, you should know that the state has cooperated with federal investigators to make Web-based gambling arrests before. This complexity alone may delay any type of state regulated online gambling initiatives from being embraced in this state.iowa casino abe requirment MOST WINNING SLOT MACHINES VEGAS Today's Oklahoma gamblers are still proving themselves at the tables You've likely come across other pages like ours that proclaim things like " online gambling is completely legal in Oklahoma.". Reviews the current legal status for Oklahoma online gambling, live poker, bingo and casino gaming. Includes history, useful resources and more. Oklahoma Gambling Online and Offline. The first breakthrough would come in , when gamblers Oklohomans finally gained the right to bet on horse races.