The amount returned to gamblers was $26.4 million, the Pennsylvania Gaming Control Board reported.
The gross revenue -- the amount returned to gamblers -- was $2.2 million, after subtracting $778,148 in promotional free plays.
Of the gross revenue, $1.2 million went to the state and $1 million to the casino.
During a comparable week in 2014, from May 19-25, gamblers wagered $30.5 million. The amount returned to them was $27.3 million.
The record for slots wagers in one week was $57 million, set during the week of July 5-11, 2010.