Tap and upgrade. That's all it is. All the fake ads that make the game look really fun are annoying. I stopped playing a year ago. But I'm seeing ads for the game now that are nothing like the game itself. The ads look way more fun than the game. Also... Truly a pay to win game. There are characters you so.ply cannot unlock without money and they are powerful. It's easy to get addicted to the game because it requires no skill whatsoever... Just money