I'm just playing around with Final Fantasy IV DS and ROM hacking. I unpacked the rom successfully, but I encountered a file type that I hadn't read about. The extension, .bbd, doesn't show up in a google search and I've scoured everything I know of and can't find any info on the file. I'm sure it's just something simple, but I don't know where else to look. My goal is to edit the ROM in such a way that Cecil learns offensive magic by level up.(I thought this'd be a relatively simple task for my first attempt at ROM hacking. I might be wrong, though. ) I assume it's some type of compression, but I really have no basis for that assumption. If anyone can point me to some info on the subject I'd be very appreciative. Sorry if this is a silly question.