Through the first 10 months of the year, revenue rose 2.7 % at the MGM Grand Detroit, MotorCity Casino Hotel and Greektown Casino Hotel compared with last year's January-October period.
The gains are likely due to increased optimism about the economy and weak 2009 performance, said Tom Nelson, principal with Haslett, Mich.-based Gaming Regulatory Consultants LLC.
Revenue at MGM Grand Detroit last month rose 4.2 % to $46.8 million from $44.9 million in October 2009. MGM, which holds the city's largest casino market share, has experienced the biggest revenue gain this year.