Beautiful music, art, sound effects, character design, background, setting, etc. I really think that this would benefit from some sort of story; at this point it seems incomplete. If it was me I'd have that main character be a sad little coal miner orphan boy who uses all his wages to buy candy; once he runs out of those he goes around toppling his coworkers and stealing their lives and candy. Soon the sad little coal boy gets diabetes and passes away in a blissful sugar coma. Either that or you can make a music-based game.