Atlantic City's newest proposed casino, MGM Grand, will be a $5 billion project modeled after the CityCenter project in Las Vegas. Scheduled for a opening. MGM Grand Atlantic City was a planned resort casino by MGM Mirage in Atlantic City, New Jersey. It was to be located on 72 acres (29 ha) of land between the Address : Atlantic City, New Jersey. TRENTON — MGM Resorts International, owner of Borgata, and Caesars Entertainment Corp. are looking to team up on a project in Atlantic.