Officially certified by Guiness World Records, the historic designation was captured during the kick-off of Everi's 2016 TournEvent of Champions.
"This is a thrilling honor not just for Muckleshoot Casino, but for the incredible 3,173 players players who hold this record with us equally," said Conrad Granito, General Manager of Muckleshoot Casino. "Their spirited enthusiasm, combined with the exhilarating fun of Everi's TournEvent of Champions, created a winning combination."
An official Guiness World Records adjudicator verified the accomplishment after a more than 13-hour period. Participation in the history-making event, which awarded more than $100,000 in cash and prizes, was free to guests 21 and older.
The tournament's top finisher, Benigno T. of Federal Way, Wa., received $21,000 in cash and a four-night trip to Las Vegas to compete for a chance to win $1 million in Everi's TournEvent of Champions championship event on September 28, 2016.
"We've held hundreds of TournEvent of Champions slot tournaments over the past five years, but this one was definitely the most memorable and the perfect way to kick off this year's campaign," remarked Linda Trinh, Everi Vice President of Marketing & Promotions. "We are proud to be a part of this historic event and want to thank Muckleshoot Casino, as well as all the players, who helped make this our biggest TournEvent of Champions tournament to date."