The amount returned to gamblers was $24.5 million, the Pennsylvania Gaming Control Board reported.
The gross revenue -- the amount of gamblers' losses -- was $2.3 million, after subtracting $534,351 in promotional free plays.
Of the gross revenue, more than $1.2 million went to the state and nearly $1.1 million to the casino.
During a comparable week in 2014, from Dec. 1 to 7, gamblers wagered $27.8 million. The amount returned to them was $25 million.
The record for slots wagers in one week is $57 million, set during the week of July 5-11, 2010.