It's actually very easy to set it up as well. You can choose whether you'd like to implement image ads, text ads or video ads. You filter the options which mean that you're in control of what type of ads that is to be shown along with your online game. However, this is still at a BETA test level which means that there are several regulations and conditions you'll have to consider if you wish to be able to take advantage of this new way of working with AdSense. If you want to know more about this issue we'd recommend you to read our article on this issue.