MGM National Harbor's expansion, which comes less than two years after opening its doors in December 2016, includes a new, second-floor poker room, off-track horse betting offered in partnership with the Maryland Jockey Club, 285 slot machines and a new terrace overlooking the Potomac River.

"It’s a great result when positive customer demand drives a business to expand its offerings," said Melonie Johnson, President and Chief Operating Officer of MGM National Harbor. "This year, we have set new casino revenue marks. Expanding our gaming offerings will help us meet the desire of our customers for more luxury gaming entertainment space while welcoming new players to the resort as well. Most importantly, we are providing 250 additional jobs and additional tax revenues to Prince George’s County and the State of Maryland."
The newly completed space includes the following elements:

The expansion comes as MGM’s biggest competitor, the Live Hotel and Casino in Anne Arundel County, recently added a 310-room hotel that now stands as the county’s tallest building.
State regulators report that June revenue at the MGM casino totaled $59 million, compared to $48 million at Live casino.