it's just another generic mobile game filled with ads. at first it wasn't so bad but around levels 7-10 an ad plays after every level and the levels aren't long they're mostly 30 seconds long sometimes even shorter. after every 1-2 upgrades i get, it will give me an offer to watch an ad to upgrade for free but i don't want to watch an ad to do that i just want to use the money i earned to upgrade but it doesn't give me the option. i know the devs don't care so this is mainly just a warning.