What an addictive and fun game! At first I didn't understand the rules very well and many times I was beaten by the medium sized monkey humans around wave 7.
Once I realized that I could reset the wave by going off screen, I was able to deal with the enemies with more and more upgrades.
Still, it was very scary and tense when the wave reset reached the limit of the appearance of the giant ape-humans!
I thought the city parts were very well balanced, but the weapons felt especially strong, especially the flamethrower.
In any case, I had a lot of fun playing it, meow~!