As a beta user of AdSense for Games, you can display video ads, image ads, or text ads within your online games to earn revenue. You’ll be able to show these ads in placements you define, such as interstitial frames before a game, after a level change, or when a game is over. Members of our AdWords team will sell your in-game ad placements directly to top brand advertisers, and you’ll also see contextually targeted text and image ads based on content and demographic information.
How do you qualify?
Eligible publishers must have a minimum of 500,000 game plays per day and have 80% of their traffic from the U.S. or the U.K.
For more information, visit the Google Games site.