Revenue down slightly at Detroit’s three casinos Kurt Nagl, Crain's Detroit Business · November 6, 2019 at 2:16 pm Declined revenue at Greektown Casino-Hotel and MGM Grand Detroit contributed to a negligible drop in October sales at Detroit’s three casinos. Overall revenue fell 0.3 percent year-over-year to $115.7 million, according to a Tuesday news release from the Michigan Gaming Control Board. Revenue was up 3 percent from September. MGM’s revenue in October decreased 1.8 percent to $48.9 million, while revenue at Greektown slipped 0.4 percent to $27.5 million. MotorCity saw a 1.9 percent increase to $39.3 million. MGM’s market share was 42 percent, down two points from last month, while Greektown’s increased two points to 24 percent. MotorCity stayed steady at 34 percent.