NPC isn't listed on the NOE site, either.
However...
Two different major UK stores have it available for preorder, one gives a release date of Q3 2004 and the other says it is due 9/24/2004.
On a similar note, I've found that the English Pokemon Tetris for the Pokemon Mini system was released in at least Germany and Spain, but I can't find it anywhere else. NOE does list that game, but has a null release date. I don't understand why it wasn't released here unless it had something to do with licensing from the Tetris Company.
I don't know what to make of that. Perhaps there is hope. Weird stuff, either way.