and India have licensed casinos, and there are only a few in India. Of the five most populated countries - China, India, United States, Indonesia, and Brazil - only the U.S. The Uni ted States has more casinos within its borders and on Indian reservations than the next ten countries combined. With the exception of China, most of the countries without casinos are either predominantly Muslim or are remote island nations without the ability to attract many tourists. Almost every country in the world has casinos. Gambling is big business internationally. Betting on sports futures, props and lay bets.