In 1967, Pennsylvania enacted a law allowing thoroughbred horse racing with parimutuel wagering. History Background and early history (1968–1994) Beginning: Pitt Park Raceway, Inc. It also offers sports betting in 15 jurisdictions and online casino gaming in 5, under brands such as ESPN BET and theScore. It operates 43 properties in 20 states, under brands including Hollywood Casino, Ameristar, and Boomtown. Penn Entertainment, Inc., formerly Penn National Gaming, is an American entertainment company and operator of integrated entertainment, sports content, and casino gambling.