Just brainstorming here, I can see that ads would make 0 A.D. look 'cheap' and I agree that the little amount of money you would make with ads isn't worth the effort of implementing those ads. For me, donations would be the best way to go about it, if you attract more players you would get more donations. (if players know that donations would actually speed up the progress on the game.) But I think this game also needs more marketing, the youtube channel etc. is a good start but not quite enough I think. More 'mainstream' media coverage would be better, I haven't seen a lot of articles about the alpha 8 release. Do people actually know 0 A.D. is playable now?