Creative idea — assembling robots on a conveyor line fits the Machines theme really well!
The audio works nicely. For graphics, a bit more life could go a long way — an animated conveyor belt, rotating wheels, or subtle part movements would make feel much more alive.
A couple of minor things I noticed: a 🤖-assembling-sound during the welcome/intro screen would add a nice touch to the onboarding feel. Also, the catching platform felt slightly out of sync with the mouse movement at times (not sure it’s intentionally or not).
That said, I genuinely enjoyed it and found myself spending quite a bit of time playing — always a good sign! Great job completing it in 5 days.