World Roulette King

What is World Roulette King?

Air travel is booming, but Las Vegas isn’t seeing the same lift, as tourism numbers remain turbulent.

Through July, the Las Vegas Convention & Visitors Authority (LVCVA) reported that visitor volume has rebounded only 0.5%. 2026 followed a difficult 2025, where visitation crashed 7.5%.

Far fewer travelers are arriving in the casino town by air this year. Harry Reid International Airport reported 30.2 million passengers through July—a 6.9% drop from the same period in 2025—with international traffic down nearly 9%.

What is World Roulette King?

Strip away the language of contracts, order books and event trading and Bernard Marantelli has a blunt description of what is happening inside US sports prediction markets. “Kalshi is a sportsbook that’s just not allowed to have an in-house risk team,” says the founder of White Swan Data, one of the specialist firms now making markets on prediction exchanges.

The difference is all about the risk function. A sportsbook employs traders to price bets and manage its exposure. An exchange provides an API through which firms compete to quote prices and supply liquidity.

“Here’s an API. Bernard and 88 other people can market-make all these request-for-quotes (RFQs),” Marantelli says. “Some people might come in and just do esports because they’re esports experts. Others do everything. Some focus on same-game parlays. But it’s a sportsbook.”

About World Roulette King

“Speed of iteration is probably the biggest difference,” he says. “Traditionally, every significant change can create another development cycle involving several different teams. With Game in a Box, the creator can iterate much closer to real time.”

Crucially, Curwen sees those efficiencies as a means to an end rather than the primary objective.

“That’s where I think Game in a Box becomes really interesting,” Curwen says. “The ambition isn’t to use technology to make average games faster. It’s to give talented creators the freedom to try more ideas and hopefully produce better games.”