That's a satisfying screen if i've ever seen one.
This is definitely one to get the graph paper out for. Simple is sometimes good, and I got more enjoyment out of this than some other entries so far, it certainly kept me occupied for longer!
I don't have anything bad to say about it; because all your games, this being no exception, never pretend to be anything they are not. This is something I will always respect.
Thank you.