http://casualgamesassociation.org/press.php

The idea of hardcore versus casual gaming motivated me to find out just how popular “casual” games are. Of course, I see people waiting in line or sitting in class playing Angry Birds or Temple Runner all the time. However, are there more than just bored college students that play these games? The answer is definitely yes. I stumbled upon an organizational website designed to help casual game developers. The site also lists a few interesting facts: budgets for internet casual games are usually around %100,000 to $500,000, more than 200 million people in the world play “casual” games, and in 2009, casual games made over $3 billion dollars in revenue.