This game can be very frustrating at times. The hitboxes for the aliens and holes, especially the holes, seem much too large. I feel like many times when I felt safe, I was thrown into the abyss. The friction in this game could also be higher because you will almost endlessly drift until you hit a wall or move in another direction. This game is hard and many of my complaints probably stem from my rage of dying so much. I would like having extra lives at each checkpoint so that I don't feel like I lost so many lives at one point and could never recover. Other than that, the pixel art is great, the music is amazing, and I love the sound effects when I hit the instruments. I also loved the idea of aliens and of a hedgehog main character. This game is a cute, short, adventure. Well done.
I almost forgot: I can't see how the game is related to the theme. Maybe you can explain it to me?