This is a solid base for what I think could become a far better game. I didn't find anything really wrong with it aside from maybe increasing the movement speed. I do like that ends of the screen wrap around though. I didn't find anything particularly funny about it, the sound effects are decent though.
The game is really easy for me, I was getting up to 12+ lives without trying too hard, I actually had to try to die. But frankly for a jam game I think its better that its too easy than too hard.
With some more powerups, enemy types and difficulty scaling this could be pretty cool!