I own a website about particular online game and I want to make it profitable, the problem is that there 0$ on Adsense since there aren't any bids for the search KW's. I tried to use adfly (url short) ads but there are small profit. So, how I can generate the best revenue with my traffic 10-15k visitors per month? (can't use AdSense as you can understand). Please don't mentioned things like affiliate marketing since it's not fit to my website. Thank you!