Dissemination of gambling information —.riviera online casino CASINO ROYAL SONG Online gamblers in Oklahoma are not outlawed by an specific or stated online gambling laws. Oklahoma does not have the means to legalize and regulate online gambling now and it is illegal for. We can’t tell you if playing poker online in Oklahoma is legal or illegal . Gambling has a very rich history in Oklahoma. The Indians that first arrived in Oklahoma bet on the horse races. While that penalty sounds harsh, it pales in comparison to what Oklahoma has in store for those in the business of illegal gambling.