At each stage of an online game’s development, designers have asked themselves the age-old question: “Is it fun yet?” Feedback on this question comes from many different sources: from the development team, QA, focus groups, and online beta testers. All of these are important sources of feedback, but the one that is the least understood and utilized involves player metrics from online beta testers. This session focuses on using player metrics to analyze the “fun factor” in a game, and provides concrete examples of how metrics can be useful in identifying key areas in which the game can be improved.