That was a really fun game, so fun that I went through and beat it twice! Some suggestions I have would be to have the thrusters maybe on some sort of fuel so you have to be a bit smarter with your movements. I do enjoy that you added different enemies like the ranged ones to help with balance and gameplay. Also, maybe if there was a system to upgrade, or sell some of the towers so there's more to do once you've taken all the space. Overall, a very fun game!