Well, I know, adsense for games is the same thing they had back in flash days, now it's html 5, but apparently you need 1,000,000 monthly impressions to qualify.
I have no idea how strict that requirement is, but I used to get more than that back in flash days, so maybe I can go for it again. It's not the same as having ads inside the actual game, but it definitely is better than nothing which is what we have right now.