Fun game! I would love a preview of the area that will be affected when you click, it would make things a little easier to plan :)
Thanks for the feedback. Yeah I agree, I am thinking of having a long touch-hold / mouse-hold preview the drop radius to make planning a lot easier.
I could add mouse hover, but that's harder to do on touch devices and I don't want to give one device type an advantage the other other doesn't have.