Great way to pass time. It's fun and easy to play. My only complaint is not being able to see weapon stats before purchasing. I hate saving for an expensive weapon only to find what I already had was better. Game does not link to any account. if you change phones or factory reset all your progress is lost and you have to restart from level one.

very addictive game. after purchasing a gun for about $7 I make it to level 2000 and something and now it will not let me get shields unless I pay for them very disappointing I felt that I accomplished a whole lot in this game just to find out that I have to pay for shields now or continue without them from here on out I guess. oh well nothing is perfect I guess. Everyone wants your money

After a while, it's very repetitious. And the best weapon can't be obtained. You can't buy it or win it. The game gives you free trials of each weapon, and then offers to let you buy it for $7.99-$9.99. Except the only one worth buying. That's not available. I'm on Level 5240, BTW. Also, it isn't true that buying a weapon removes ads. If you want more than a very small number of points for beating a level, you must watch ads. And it often crashes without giving you the points.