Under the Tribal-State Compact, Native American casinos can operate across the state and represent the only officially legal casino gambling option for Oklahomans. Oklahoma might not have any officially authorized online casinos, but the story is quite different when it comes to land-based casinos. You also won’t find an official legal age for casinos in Oklahoma (at least not online ones), but most offshore sites won’t accept anyone under 18. This means that as long as you find a casino site that is operated offshore while accepting US players, you are free to join it without facing any legal repercussions. Namely, Oklahoma is in a legal gray zone regarding online gambling.
However, this doesn’t mean that online casinos are strictly illegal in OK. Even though many US states have authorized online casinos in the last several years, Oklahoma is yet to join the party.