For the past few days, I couldn't seem to find my AC:NL cartridge. I put it under my bed for safekeeping along with my AC:WW cartridge. I looked everywhere. This also happened with my Mario Kart DS cartridge (which is still lost today). I promise if I find it again, I'll try my best to put it in a extremely safe place. So for now, I have to look foward to buying a new copy.