Properties are commercial entities, and no Indian casinos are running in Delaware.Īll casinos are the result of expanded racetracks under a change in Delaware law. There are three Delaware casino properties spread throughout the state. Most Popular Casinos in Delaware Reviewed You can now play slots and table games at three giant racinos spread across The Bue Hen State. In addition, Delaware was a pioneer in legalizing the first online casinos. Delaware casinos have been legal in the state since the mid-1990s.