I like the game
It's quite fun.
The music was a bit repetitive but that's just being nitpicky
What I found annoying was the inability to take a piece off if I misplaced it. Or if I build something I don't like after trying it.
It would be way nicer if you could also take items off and put them again. I think at least after losing a round there should be a chance to revert the last set of changes
I would have also enjoyed having more space to put weapons as the spawn for blocks feels quite scarce. And the difficulty curve ramps up quite a bit, if you build your rocket vertically you lose quite fast.
I also think more snappy control would have felt nicer as I often felt like I couldn't control the rocket.
All in all, I did play quite often and got on top of the leaderboard (for now at least). It's a fun game. Good job!