As a result of the completion of this expansion, the casino overtook Foxwoods Resort Casino to become the largest casino in the United States and one of the largest in the world based on gaming floor space. In August 2013, WinStar Resorts completed a major expansion project, which added a new 1000-room second hotel tower that was divided into two phases this also added a new casino that is attached to the tower. The casino opened as the WinStar Casinos in 2004, and was expanded (with a 395-room hotel tower) and renamed WinStar World Casino in 2009 its 370,000 square feet (34,000 m 2 ) of casino floor made it the world's largest casino.
It is owned and operated by the Chickasaw Nation. WinStar World Casino and Resort is an American tribal casino and hotel located in Thackerville, Oklahoma, near the Oklahoma– Texas state line.