The visuals and the general idea is really good! However the game was really hard and it didn't have a lot of gameplay (or I was too bad to get anywhere). Good job though!
I do have a bit of advice but feel free to do whatever you want with your game because it has potential!
I think a menu screen would really benefit the game. It doesn't have to be much just a few buttons in front of that majestic thumbnail.
I also think a tutorial could benefit the players, I know it's simple controls but a good tutorial could really benefit just the vibe of the game.
Another piece of advice would be to decrease the difficulty in some way. It doesn't have to be anything major, just add waves or something that will give the player a head start on what's about to happen.
You could also add some music and sound effects to improve the feel of the game. I know it sounds surprising but it truly does benefit the feel.
Finally, something that is more of just an idea than advice, actually add COOKING. I did NOT cook, sadly. Hopefully if you continued working on this game you could make cooking a possibility and that's how you could create new towers.
Great game, great potential, still needs some work though (as all games do!)
Good luck and I hope to see more from you and your team :)