GC Online Project products, which are related products of NFJJ, have been released.
The GC Online Project is a project to play the GameCube online using NFJJ and various other tools and technologies.
I have started selling a book that describes the necessary equipment, how to make it, and how to set it up.
The book can be purchased at the tech book fest that is currently being held.
https://techbookfest.org/product/7NhkdAkpT4B7pjBkiXu1Wr?productVariantID=s5euWVrS9AUXRszhk2PpvL
I don't have that many in stock, but I have started selling the kits I actually made.
https://pneumagamez.booth.pm/items/4137973
Please check the various possibilities hidden in NFJJ.
https://store.steampowered.com/app/1830530/Net_Friend_Joy_Joypad/