Just a few few things. Overall i LOVED the game but upon completing it there were a few things i think you may wanna check out. I don't believe this was an error on my part but sometimes when attacking a city the game would freeze the atk bar i could buy upgrades and still do everything else but the city atk bar and money income would freeze.
next the money was a little too easy. by the end of the game i had over 40 mill in cash with every upgrade bought and 999 zombies each. i had a blast with it but it may be something you want to consider looking at
What do you think about 1 firing some of the employees? There were times when i felt i was spending just too much because of the employees but it seemed i couldn't fire them so i had to focus allot more on capturing cities since i bought all the investments i could at the time and 2 upgrades for the employees themselves. Upgrading the employees would give more use to them then just their numbers.
Overall fun fun game. The silly jokes and humor in it were great. 9.8/10 4.5/5