Games with "energy" should be banned from Kong, or maybe be hidden away in their own section. Let me play the damn game or I will just go find another one. [leaves to go find another one]
Starts off fun but ends as work. The "...is very effective in x" zombies seems like you ran out of time making the game or something - once you get to those levels, you are making enough money to fully upgrade them and attack with a full army of just them and it's just pushing buttons. China was the hardest zone since it was the last one you had to beat with some sort of strategy.