At Singapore casino Resorts World Sentosa’s Lunar New Year lucky draw for high rollers earlier this year, the biggest prize was a bottle of Martell Cognac. Across the harbor at rival Marina Bay Sands, the top sweepstakes winner walked away with a new Mercedes-Benz CLA 200 worth much more.

It’s one of the incidents that has made the casino duopoly in one of the world’s top gambling venues more lopsided in the past few years. That’s putting pressure on the Sentosa island resort, whose gaming license is due for renewal in the coming months.

The Southeast Asian financial hub has seen a strong post-COVID rebound in tourist arrivals and an increase in wealthy gamblers from neighboring countries and China. It’s also taken some business from Macau, which has been impacted by Chinese government crackdowns on casino junkets and illegal money-exchange activities.