Fun game! After reading the comments behind me I found out I could move after my first 4 attempts haha. Maybe putting the controls in the description could be good to prevent cases like me (although I probably should have tried to move lol).
I really liked it, I think given more time and some more progression features this could make a good full experience. Making them spawn in all the directions from the player could be good as I found I could keep them in a clump if I flew in a particular way