I think this is a creative concept for a tower defense game. I really like the idea of fixing towers. This makes me feel that I am actually playing the game instead of watching it like other tower defense game.
In addition, the animation is not as good-looking as other TD games available in the stores, but there is a lot of effort in making it. For example, In the first chapter after the tutorial, the movement of the spiders' legs is designed with great detail.
I also think it is suitable to have a narrative behind this game .