Impressive amount of polish! I would maybe have made it so dragging a plug was 1:1 in screen space so it felt like a real drag instead of the cursor moving differently than the plug. The puzzle mechanic itself did start to drag for me around the 5th time or so since they all solve in the basic same straightforward way, though it would take some thinking to add more mechanics to this game. I did also soft lock at some point, I pulled a plug out and the plug was just stuck in the air. Regardless a good effort, quite impressive for the amount of time.