Made with @DyITLip's extracted assets! I called the theme, "Grumpy Cat's Worst Theme Ever". Press SPACE to see it on a REAL 3DS! (also i suck so green flag to re-show list) All of the other stuff is badges from Nintendo Badge Arcade. (Like the Mario and the Game Boy cartridges.)
Download for 3DS Anemone: https://github.com/ST5Sneaky/3DS/releases/tag/grumpy-cats-worst-theme-ever
