This is pretty fun, well done! I initially didn't get what I had to do, but copying makes a huge difference. I went from 12 to >100 people saved just because of that mechanic! Also, I feel like the music matches the aesthetics very well.
I have a small suggestion, though: have you considered allowing the player to make copies successive by continuously holding down the x button, instead of needing to release it and press it again for every copy?