Interesting game, I wasn’t quite sure what to do at first. I found that I can take and insert fuses where ever there was some light, and eventually music started playing, but I wasn’t sure what to do after that.
One suggestion would be to make the sparks last longer, as by default there is basically no visibility (on my screen). The sparks only light things up for less than a second, which encourages me to spam click (which kind of hurts), and as you say could be bad for photo sensitivity.
Interesting idea overall!