The most popular genre of casino games found online is slots. This is owed to their simple nature which means that even the biggest newbie to casinos can easily play these games. The most popular slot machine game is likely Starburst, followed by Gonzo’s Quest and then Book of the Dead. Other popular casino games are the classics that you will already be familiar with, such as blackjack, roulette and poker, but slots far outrank these in terms of widespread popularity.