Too many ads, not enough game
I reached day 25. The map never became more interesting than a tiny empty rectangle, the enemies looked different but didn’t really change, and the weapons did more damage as they got upgraded but didn’t change enough to be interesting. There is no story as far as I can tell, and the screen shots make it look a lot more interesting than it is. On top of all of this, there are a lot more ads than any of this is worth.