I bought 4 xonox games and I was looking here for info about how to see if a game is pal or ntsc. Some people was talking about the kind of label or color of casing (grey or black).
Any if you look at the picture, I have tested the game and they are all ntsc even if it grey casing or different label.
And for the record, I receive the 4 games on the left cib and on the back of all the box "Distributed in Canada by xonox". The 4 box and manual are in french and english
Canada = ntsc and I'm in canada
All this to say that the best way to find if pal or ntsc is to test the game ☺