Love the lighting effect! How do you do that? Not sure if it was just me, but I didn't get any sound.
I did my game in Unity, with 2D and Post processing. It is a simple Bloom effect, but with the intensity of 40, and my colors are light to bloom a lot :D (I guess) I only has sound on the collecting event. Sadly no background music.
Thank you for sharing the details, I'll give bloom a try!