Thank you for your feedback! I've added a settings screen, and now the SFX volume is fully customizable. Hope this helps!
Yep, background music would be great... I'm thinking of making my own, but that would probably be catastrophic.
I've already made some more levels and features but want to add some more before publishing them.
I'll try to come up with a story sometime soon and make some animations to go with it, thanks for the feedback!