I hate that I have to use cursor keys AND click. Let me use just one or the other. This isn't an FPS and if it was, there'd be a necessity because the keys are being used for everything else and I need to aim. The mouse doesn't aim at all here. Also, I got stuck on plugging the steam and died. I plugged all the holes and nothing happened so I started unplugging them, wondering what I was supposed to do. The screen turned grey. It's pretty stupid if such a simple thing gets me killed. And it's not much fun using a mouse or finger to wiggle things out of gears. This is the game? It looks nice but the gameplay kind of sucks.
I think the gameplay is great, though I agree aiming could be useful. Maybe there could also be some pointers as to how to solve certain puzzles (the steam confused me too) but I just kinda rubbed my two brain cells together and removed the plugs that were shaking. You can't just spam all the holes, and I think that was a good choice by the developers. Tbh, my best advice for you is get good or go home.