Product code: Paper Mario Dark online Star Edition - N64 Nintendo 64 ***Expansion pak is needed*** USA English
online Game is tested and works perfectly.
Expansion pak is required to play with game, without one it will not work at all.
If you have the expansion pak and you still have issues with booting up the game it means that your expansion pak is not fully functional. you will have to try another expansion pak.
Game is NTSC format.
If you have any inquiries let me know.