The art and style of this game is great! I think the gameplay could be spiced up though, I felt I knew the balancing point too easily, once I had enough turrets for a spawner I just didn't care about that spawner anymore because I knew nothing bad could go wrong. I would love to see different types of enemies, or even having spawners have a weighted chance to spawn different kinds of enemies, so you might get moments that the spawner seems weak and other where it seems too strong, and that would keep you on edge. I'll admit I didn't get too far in though, either way great game!