So I'm trying to dig around through Hey! Pikmin's files. Surprisingly, all the files are .bch or .arc files, but they all have .z at the end of them, effectively making them zip files. And of course, just opening them up doesn't work. I've tried opening them in EFE and Ohana3DS to no avail (even after trying to change the filetype by remobing the .z file). I can't seem to find any other threads of anything similar in other games, but maybe I'm not looking hard enough? So is there any way to get past this?