I really liked this game! It's really polished (loved the UI and the transition effect!) and I love how we're controlling a flying croissant. I personally only found two things to criticise: It was sometimes a bit hard to tell what the enemy was supposed to be.
For example, I genuinely have no idea what that's supposed to be:
But honestly, that's not really a big problem, and my own game has graphics way worse than that. xD
And then, of course, the game didn't *really* have something to do with towers... I mean, sure, the tower in the background looks nice, but it is at the end just a background. But honestly, these are small issues and it doesn't really matter at all. Good job!