Very cute idea and a great take on the theme.
You managed to create an interesting world with the CRT effect and the backstory, I enjoyed that quite a lot.
My only complaint is that the bunnies come so fast that I didn't have the time to exchange the mushrooms for magic.
Maybe you could make the gnome invincible when it stands on the trading circle and/or limit the number of max bunnies because after a while it was impossible to progress so I restarted all over again. :D
Overall I liked it, congrats on the entry! :)