What is Ntsc-j?
1.
When used of console games, describes cartridges or discs that are intended to run only on machinery made for sale in Japan (historically, console games have tended to have regional lock-out due to greed, stupidity, silly/draconian licensing agreements and/or the perverse joy derived from shafting the consumer on the part of console manufacturers).
Frequently, the NTSC-J version of a game will have more features, different cover art and different content than the PAL (Europe) or NTSC-US (North America), or sometimes, won't be released at all outside Japan
I just got a copy of Rival Schools II and it's the NTSC-J version! That means the minigames
Capcom took out in the North American version are still there.
See