The Queens racino's income in May even surpassed that of Connecticut's Mohegan Sun Casino, which pulled in $55.4 million during the same period, the Daily News reports.
"New York City gamblers have long filled their gambling desires in Atlantic City and Connecticut," Joseph Weinert, senior vice president of Spectrum Gaming Group, a consulting firm, told the News. "Now they have someplace right in their backyard, and they are going there in droves."
The casino's top spot comes after a two-month slump that saw its revenues decrease from a high of $59 million in March.
The success of Resorts World, which contributed $25.3 million to education funds in May and opened last October, could help Gov. Andrew Cuomo's push to legalize table games in New York state.
While talks between Cuomo and Genting, the company that runs Resorts World, fell through last month, Cuomo is still looking to build a casino and convention center in New York City.