I'm making a 3D infinite runner for the Android, and it's the standard type fare, not groundbreaking so far as I can tell but I'm trying my best to make it be as fun and up to par as possible. That said, most runners I've seen use the fremuim model with IAPs (additional characters in my case) and ad-free versions. I find ads to be super annoying when I myself am playing this type of game (for research purposes of course!) and would really like to make my game ad-free because I just feel like many would appreciate that. At the same time this could be one of those situations where being "virtuous" (i.e. not twisting people's arms with ads) would come at the cost of potential revenue. And selling alternate characters by itself may not be ideal. So I was thinking of having the main game be a single "level" that seamlessly transitions from one biome to the next, thus spanning many different "levels" in one. Then I would market another level with an equal amount of unique content as a sort of "bonus extension" of the game. My instincts though tell me that this has the potential to not be well received, and could just be risky in general for reasons I am unaware of. Any thoughts on the matter would be greatly appreciated.