First of all. I really like the aesthetics of the game also the music fits it very well.
Gameplay side of things I had not much to do. It felt like a cookie clicker game for me. Where you just upgrade and watch the numbers grow. I could upgrade my tower but there wasn't much else to do than looking at it. I felt like the tactical depth of a genre typical tower defense was missing for me. One cool Idea would've been to be able to place/orient the tower pieces