This is a strange game for me. I don't particularly enjoy playing it, but I still keep playing it, kinda like "one more block" with Minecraft.
Love the graphical style very much.
I do wish there were some running expenses, though. The tooltips could be a bit better as well, like when you want to upgrade your tool, it doesn't really tell you what the new tool does (or that your current tool will be taken away from you).
Cool game, no doubt about it.
EDIT: Wow, I appear to have played it for 17 hours already! I don't even like it that much!