5 stars: Don't listen to the people that say their are too many adds. I did not get my first add til I was at the desert part(2nd level). It's a good game. Runs well. It can shut down at anytime, yes. But it's a very rare chance of that occurring. It's not a pay to win. You have to grind for better weapons. Then upgrade those weapons and yourself while fighting zombies.
4 stars: Game needs smoothing out, it runs rough even on high-end devices and crashes sometimes. It's not that bad though, but a lot more content, game modes, weapons, etc. could be added. Could you please fix daily missions as well? Sometimes they only require you to do something 0 times so you can instantly collect the reward, and I also got a mission that requires you to enter the arena 1500 times which is pretty much impossible to do.
2 stars: Fun, but a loooot of ads, the random ads let you skip fairly quick, but such a break up of game play. Progression is fair, and it gives you the option to watch ads for bonuses. There is an ad button that pops up right after you try to start a wave and it's right where your finger to move would go, I'm sure it's no accident it's there, but it sure is annoying when you click it accidentally.
2 stars: It was a decent looking alternative to cod zombies mobile being outta commission but honestly the money they spent advertising they are trying desperately to claw it back from you ads at ever possible end I wanted to buy upgrades with coins nope only given the ...