According to the Nevada Gaming numbers from more than 400 of the States's largest casinos, the Nevada Gaming Control Board reported that nearly 70 percent of casino visitors play slot machines and video poker games, while the other 30 percent of visitors play table or other games. We are here to break it down for you with a list of what we feel are the Most Popular Casino Games in Las Vegas. Ever wonder what the most popular games are on a Las Vegas casino floor.