This game is really good looking and unique. The art style is really nice, it has this cosmic-pixel kind of vibe, which matches the main theme perfectly. It's both challenging and replayable which are great and I think that means you could add a ton more levels if you wanted to.
A couple things I can suggest to bulk up the game would be some background music, something cosmic like I said before, maybe it changes every level or something.
Also, I saw another comment of yours talking about story, which I definitely want more of from this character and its temporally-messed up world. Nice job, keep it up!