Okay game.
Overall, the game is alright. The cutscenes were amusing also.
Although, like most tower defense games, once you get the ultimate tower and upgraded it... the creeps stand no chance.
Tip : Upgrade towers and sell them to get the pillbox as soon as possible.
Do not get the Air, Magic, and Trap towers... they are not worth it.
Just start with about 3-4 archery and cannon towers and upgrade them once, then sell them all and get the pillbox when you have enough money.
Only upgrade the pillbox with your money. When you get one pillbox to level 5, get another one, and so on.