This was a well-designed puzzle game, and I did like how you implemented sound and music into the levels. The firefly animations were nicely done. I would have liked to have seen some more challenged in the later levels but overall, it was a fun game to play. I wished I could have moved the fireflies a bit faster but think that might have had something to do with my mouse settings. For your how to play, adding diagrams/images would be helpful since visuals allow the player to understand what to do quicker. I really enjoyed the game's relaxing ambiance :D