I know this isn't exactly the most popular game to hack or mess around with but I think it deserves its own thread, due to the lack of information elsewhere on this subject.
All the game's files are in bcstm, dsc, or bin extensions. Dsc files are still mostly a mystery, although custom songs have been made (and I have no clue how). Most of the game's files are in .bin format, and are actually disguised as more files such as CTPK textures, Nintendo archives (.narc files),...
Hatsune Miku: Project Mirai DX Hacking Thread
All the game's files are in bcstm, dsc, or bin extensions. Dsc files are still mostly a mystery, although custom songs have been made (and I have no clue how). Most of the game's files are in .bin format, and are actually disguised as more files such as CTPK textures, Nintendo archives (.narc files),...
Hatsune Miku: Project Mirai DX Hacking Thread