I've used the region free and the wii brick blocker, and it works on PAL. I got a bit of a flicker in one of the pool rooms between shots, but it could have been the room itself. I prefer the wii play pool to this. First on this you don't use the wiimote as a cue and have to mess around with using A to set power and B to play the shot.
I did find this game hard and a little basic. Too basic for todays games. No online play either, so if you've no friends or just the one wiimote it won't be much of a party. I played the 9 ball game which you pot balls to get 100 points and loose 100 points if you miss. I think you score goes up the more balls you pot in a row.
I can't remember the rules of 9 ball. Do you have to pot the lowest ball first, or can you go for any? If you can't the computer couldn't play the lowest ball on the second game. So he played the number 3 ball which potted the no 1 ball and the no 9 ball. First shot the computer had, it won.
I would rather they released a wiigame similar to club house games, with loads of different games on instead of 1 poor one.