You might be wondering why a company would spend the time and effort to create an entire casino gaming website that they have no intention of charging people to use. After all, casino companies, like most companies, are not known for offering their services for free. There is no real involved in social gaming. While free, these casinos often offer in-app purchase options. They invariably have their own set of currencies, rewards, and customizations that all players can use. While the customizations and rewards aren't necessary to play the game, they do offer their appeal to players who want to customize their own experiences.