Glad you like our music and art. Really happy you picked up on the Spongebob themed jellyfish, as that was a huge source of inspiration for us as well!
Thanks for the feedback on the levels, we will take a look at different level text colours/fonts to clear up the gameplay.
We wanted the first few levels to be tutorials and introduce mechanics, before we make challenging ones. Glad you like the skill curve.
-Yaniv