That guys got skills. I made a picture of some guy in it that I thought was pretty amazing. But not nearly at that level.
Working 3-4 hours laate at night on weekdays could have that done in a few months.. ok maybe 8 months..
I don't neccesarily find the art itself impressive, but what I find quite impressive is the amount of time it must have taken him to draw that. With a mouse, I'll admit is exceptional. Not like I could do much better, anyway.