Really nice work on this, the art/animations and UI/UX elements are all extremely polished.
This is one of several cube-on-a-track games I've seen (including my own!), and while this is mechanically solid, I think the difficulty curve flattens out really fast, so I'm not sure it could sustain any more levels than you currently have without feeling repetitive. If you keep working on this, I think you could find at least one additional mechanic or element to give you something to play with.
As it stands though, you've got a pretty flawless baseline of a game to work off of, great job!