I don't see the theme besides maybe the scaling of the ship?
I enjoyed:
- The warp animation, really cool!
Improvements:
- Music and SFX would have improved the overall experience
- menu was complex, a lot of options from the get go. Once you understand it, it's all good
- The upgrade from weapon 1 to 2 really does feels good. 2 to 3 didn't make a huge difference in term of "vibe"
- Enemies either were not doing anything to me, or killed me way too fast. I should have upgrade my defense a lot I think.