Social gaming refers to casual games designed to be played with friends on social platforms. It has seen tremendous growth, with over 200 million monthly active users. Key factors driving its rise include the opening of social networks to third-party developers and the growth of mobile devices and internet access. Social games are designed around player engagement loops that use visible progress, positive emotions, and social calls to action to keep players regularly engaged. While initial development and marketing costs can be $175,000-$522,000 per game, successful games generating 400,000 daily active users can yield annual revenues of $770,000-$12.3 million.