Got this on it's day of release and it plays brilliantly, the only let down i would claim is that it's got a poor Single Player, theres something not quite right with playing a card game like this by yourself, you really need a friend to play it with. That said you would also need a extra deck of cards (£6.99 on play.com) so you can play against your mate.
The online mode can be fun, but it's a tedious process to scan in your cards, tell the thing how many are in your deck, find a player, the computer tells you what cards are in your 'hand' (it's all done virtually) which then forces you to shuffle through your deck to find thta card to place down. It's very time comsuming so not really worth it in the long run, not if your a plug and play gamer like me.
So to sum up, if you got a friend who loves to play this game as much as you do, then add a star to the score.
If you love to play online, keep it at 4 stars.
If you don't hae any friends to play with and no online access, give it 3 stars.