The Category 4 casino licenses are unique to Pennsylvania and were part of a 2017 gaming law that dramatically expanded gambling options, including sports betting, online gaming, and video gaming terminals. The mini-casinos can contain up to 750 slot machines, and for an additional fee, up to 40 table games. A full-sized casino is much larger: Parx Casino in Bensalem, the state’s biggest gaming property, has 3,200 slot machines, 198 table games, and a sports-betting room.