I loved the concept of the game! The irony of wanting to stay the only human, but eventually you succumb to power and slowly join the machine. You end up being a hypocrite to yourself, and i was always curious what the next upgrade is.
As far as gameplay goes, i think the space given is a bit too small but at the start it was hard, though, when i got an upgrade everything became much easier and easier so maybe the more upgrades you get the more space but also monsters you see.
Good job on the game though!