I like the concept! I found a few bugs that I think should be easy to solve:
- The machines don't seem to actually update whether they're connected to power unless you disconnect and reconnect wires sometimes. This is both exploitable (to win without finding the proper solution) and can also, on the other hand, impede or prevent the player from finding the actual solution.
- Finishing a level forces you to return to the title screen, which also forces you to need to use a mouse in a game where the mouse is otherwise unused.