It took a first run through (and a re-read of the tutorial) to fully understand what I was meant to be doing, but after that it was really fun! Shooters gota be my favourite tower, all resources went to them haha.
Even better if, perhaps for the first time someone plays, theres UI indicators that indicate that the cart should go back to the spawn point to drop resources off (and that the healing tower is a healing tower, not a dropoff point). I think the abilities of the towers is intuitive, it was just where to go initially. Nice that theres music variety too! Good stuff