PRNewswire -- While the overall gaming market in Detroit saw a 4.2 percent decline in May, Greektown Casino-Hotel bucked the trend once again with a stunning 7.2 percent year-over-year revenue increase for the month. Greektown was the only Detroit casino to see an increase, with MGM Grand Detroit and MotorCity seeing a 10.9 percent and 3.6 percent decrease, respectively.