So, I payed this AFTER reading other comments. And, unfortunately, I agree. The game is good; it has a good premise, and looks clean, but lacks the motivation of an actual game.
I'll append those comments by saying: if you've ever tinkered around with redstone in Minecraft, you've done this sort of thing before. And that would be good, except for the fact that you can, in fact, skip all the logic.
But, hope is not lost. A good way to make this a bit better would be to: add more complex gates, put a time limit on the stages, or have a limited number of toggles per stage. I noticed that, even when I was working the logic out, I made mistakes. But, in this fairly open game, there is no penalty for mistakes. Just toggle the offending switch, and there you go. With a limited amount of time or a limited amount of toggles, my mistakes become somewhat more dire.
My final comment is yet another criticism, but not really one that can be fixed. The source matter suffers from being highly linear, which makes it something less than an average puzzle game. Honestly, I don't know how to fix that, aside from making the circuits much more complex, or having multiple circuits end at one output. Ah, well; Food for thought.