Insane production values! The assets are commercial level, and the attention to details in everything was top notch - the transition with the cogs, the text, and the little animations that did exist. The music and sound effects were perfect to.
I will say the controls were not optimal in my option. I feel like a crazy person as in this jam everybody uses mouse dragging which I rarely seen before. Also there were a bit too many methods of interaction which made things confusing - sometimes I click items to pick them up, but other times like with the handle I need to drag it in place. And sometime I need to drag things from the inventory, and sometimes with the assembler I just need to click them. There was also lack of feedback - I tried to drag the coal to the coal input and it didn't tell me I can't do it because I need a tool.
I'm very bad in such games, and the tutorial is super appriciated - and I only give a lot of details about the controls because I think the main challenge should be the puzzlesm, and not the controls.
Amazing work and I'm going to study your repo and learn a few things :)