9. Italy ($3.48 billion)
Italy has a long history of gambling, dating back to the days of the Roman Empire. The country has more than 35 land-based casinos, and most of them offer all the classic casino games, such as Roulette, Blackjack, Punto Banco / Baccarat, and Poker. Some of the prominent casinos in Italy include, Casino di Campione d’Italia, Casino di Sanremo, and Casino Saint-Vincent (Casino de la Vallée).