With the massive popularity of social networking sites, video game developers saw the opportunity to offer people the chance to play games while being logged on to their favorite networks. Recent years have proved that such an approach was correct - social networking game companies have earned billions of USD. The number of people cropping fields or exercising missions has surpassed hundreds of millions. What is even more surprising is the fact that the average player is a 43 year old woman – a demographic that previously seemed quite immune to the video game craze. In order to find out more about the booming industry of social network games, as well as its most successful examples – read this book.