In July of 1999, the MGM Grand Detroit became the first casino to operate in Detroit, albeit in just temporary digs. These are real, Las-Vegas style casinos too, complete with a vast array of real slot machines, table games, shows, restaurants, and now sports books as well. The MGM Grand is Detroit’s largest casinoĭetroit’s three casinos generated over $1.45 billion in gaming revenue last year, per the Michigan Gaming Control Board.