Conversely, machine-game sales experienced a year-on-year decline of 23.5 percent in May,

The casino table drop — the total amount customers paid for chips for table games — surged by 77.8 percent year-on-year and 2.8 percent month-on-month, reaching KRW194.19 billion ($141.4 million) in May.

totaling KRW1.96 billion ($1.4 million). However, these sales did see a sequential increase of 12 percent compared to April.

The data comes from a filing by Lotte Tour Development, the operator of Jeju Dream Tower, with the Korea Stock Exchange.