I don't currently have any in-game ads as my game is hosted in GameJolt. I guess a better question to ask is if submitters are allowed to monetize in some way whether it be through in-game ads or in-app payments etc provided that certain rules are followed. Most devs would probably be more inclined to embed their games if it meant being able make a few bucks.
By the way, here's the link to my game on GameJolt:
Gamejolt.com
lobosan
joined
This member has provided no bio about themself...