Can we put ads of multiple ad networks say admob,revmob,chartboost in 1 game??
If it’s not against the terms and conditions of any of the ad networks, why not?
which one is the best for android?
I would just go for AdMob mainly because, although the rates are low, they actually pay (other ad networks have at some point gotten flack for not paying up.)
As for using multiple ad networks, the way you would do that is either to get some pre-made tool that manages multiple ad sources, or handle it yourself in a way that you display ads from NetworkB when NetworkA is not able to deliver an add.
You MAY be able to just fill a screen with multiple ad banners displayed at once, but you will likely get a few downloads then lots of bad reviews warning everyone about the mess.
As a user, I tend to prefer interstitial ads to banner ads. In my games, I’ve used Chartboost and Appbrain’s ads (for their “More games” page) and liked them both. But, my games have not served enough ads to get a payout (though I’ve heard only positive things about Chartboost from other developers).