Great submission!! I really had a lot of fun playing this!
It was very well-balanced but very difficult. I definitely had to take a few tries. I think for a jam game without the resources to create a few more tower types or tower upgrades, this is an incredible submission! I really liked the concept of having to automate some of the resources to fuel the towers.
I don't really have anything critical to say about it really, I really enjoyed it. A few times it felt like there was a strategy I was missing so a few enemies slipped by. Some just seemed to have too much health for me to do anything about them. Apart from that, thanks for submitting! May the ratings be kind to you :D