A nice idea! a few notes for improvement:
- I would work on the menu more, what you currently have is a bit of a mess and is hard to read.
- Your jumping could be a bit smoother, as it felt like I was in space a little.
- While I liked the enemy chasing me, I would've made it stand out as more of a threat, maybe have it be a bigger cube so I would really want to get away from it xD