See below to learn what makes these three casinos stand out. To help you do just that, we have reviewed all three currently legal Delaware online casinos. There are important differences between each of them that you should know about so that you can discover which one is right for you. However, this does not mean that all three casino sites are the same. 888 Holdings operates all three Delaware online casinos. The state lottery completely controls all online casinos, but they are managed and operated through a partnership with 888 Holdings, who you might know from the William Hill and 888casino sports betting and casino sites. Delaware online gambling law strictly regulates who can operate online casinos in the state.