Full of “mandatory” ads
As other have mentioned, you cannot finish levels without being basically forced to watch full “reward” ads. And if that’s not horrible enough of an experience in its self (which it is), some ads don’t even grant you the reward (the Unity ads) so you’re sometimes forced to either watch multiple ads until you get a working one or restart the game completely - but if you restart you’re most likely just going to end up in the same situation again. Since this is my experience from the last two days - forced to watch ads that don’t even work - I chose to delete the game from my phone this time around, instead of restarting the level.