The FanDuel Group is one of the most well-known sports betting brands in the United States. FanDuel acts as one of the online sports betting arms of the Golden Gulch, Mardi Gras, and Golden Gates casinos. Offering up legal online sports betting on mobile and online, the daily fantasy sports giant is operating in partnership with Twin River Holdings, which owns three Black Hawk casinos. Sports betting fans in The Centennial State can now bet using the FanDuel Colorado sportsbook.