Me likey, me very likey!
More than all, I love the double-meaning behind your concept! The idea is very appealing.
I had several small gripes.
The UI's look could use some work.
The first level's pacing is too slow. The later levels' pacing is fine, though!
And lastly. Especially in the last level, the indicators for incoming, new spaceships, was hard to notice.
Those gripes out of the way, this game was absolutely fantastic! I liked the VFX and lighting, even if simple, and you have a good taste in music!
It was overall good fun.
Keep on fighting,
Blawnode.