This game is the best I've played so far. You worked really hard and it shows!
The sound design and lighting are remarkable. I also love that your game page has the same color scheme.
All in all it was a wonderful experience. So glad I clicked on this one!
My only note would be to make the fireflies basic polygons like everything else instead of circles.
I loved tracking them and waiting for them to turn back on. The collect and let go mechanic was cool as well.