Pay money, or they will bore you to death
The principle of this game is to bore you to death by making you sit through the same thing repeatedly—unless you pay money every time to make it go faster. There are lots of ways to pay money. You can pay to level up troops. If that’s not fast enough, you can pay more money to buy diamonds, which makes them level up even faster. They even place non-stop ads in the game to make it “enjoyable” for you. If you hate ads, well, you guessed it. You can pay them $30 so they won’t constantly annoy you with ads. Remember when games used to be fun? Those days are over.