This feels like it's already an official game rather than something coming from a game jam! UI can be improved and levels can be added - (I'm not a fan of the 'survive as long as you can' type of game). Other than that, it's solid. Great job!
Edit: I might be tired, but I'm curious to know if the screen has a lil bit of fish-eye effect? It curves a bit towards the edge. I just want to make sure my eyes didn't play a trick on me ><