Mohegan Sun is powered by FanDuel Casino, with whom it has a partnership. That said, let's take a closer look at these two powerful, top-tier names in the industry in Connecticut. All are huge names in US online gambling with operations in over 40 US states. FanDuel Sportsbook & Mohegan Sun Casino apps were selected by the Mohegan tribe. DraftKings is partnered with the aforementioned Foxwoods. There are only two legal CT online casinos: Mohegan Sun and DraftKings.