terrible first impression
There is a limit for how long early game advertisements I can take, and with the longest time I've ever seen in a game (20 seconds), you went over that limit. Greed is not good. I'm not going to click the ad even if you show it for 24 hours so making it very long like 20 seconds is really bad. Only thing I'm clicking is to close the game.
People may think I'm nitpicking about seconds but you need to make a stand somewhere else soon there will be 30 second ads, then 60 seconds, and where does it stop? Stop it now and here.