The Pennsylvania Gaming Control Board (PGCB) is the state agency overseeing and regulating all gambling transactions in the state of Pennsylvania, both online and off. Among the obligations of PGCB are the following: Regulates all available licenses in the PA state It also handles the investigation of license applicants PCBA also ensures the integrity of Gaming machines (electronic ones) It's also charged to ensure transparency in regulatory safety.
Suppose a gambling company does not have a license or certification from the PGCB. In that case, it is not considered a safe option for playing games, and there is no guarantee of fair play.
Of course, if you bet on these companies, you do so at your own risk. Offshore casinos are an example of a non-licensed wagering club in Pennsylvania. Often, the government warns against transacting with this company.
Note that all online gambling sites in Pennsylvania must work with a land-based gambling site in Pennsylvania.