I was quite pleased with this game. The influence of Kingdom Rush is visible, but in all the right ways. Even small things, like getting gems for achievements, make this stand out, and create a well rounded tower defense. 5/5
So, I was just walking to my office job next to my 3 cows and 2 chickens, then suddenly a death worm jumped out of the ground right next to me! What a strange day.
The Airport area is just a little to difficult, I find my self getting boxed in over and over. Otherwise, a few tweaks here and there, maybe a few more achievements and you have front page content.
Prince Jon, if you buy all premium content, the game is easy. There is no challenge. Playing without paying keeps it at a strategic level. You arent missing anything by not spending money, so suck it up.