Worst game ever
At level 71 the zombies stop arriving and you can’t level up the lab so you have to stop playing as you can’t win anymore stars. You need stars to level up the lab and you can’t buy them. A waste of time. Don’t play this game!
Upgrade lab
It would be better if I didn’t have to upgrade the lab to get to the next guy.
Fun game, so many issues
It forces you to watch ads a lot, and the ads that you watch for rewards don’t give you anything half the time. After level 70, the zombies just start coming
