If you like your dominoes then you will love Real Dice Dominoes, not only because it's a challenging game with 3D graphics, great gameplay and intuitive interface but because you can take the action online and play in a fun environment against up to four real people.
Some of whom are very strong players. It's good to practise first to avoid embarrassment and the computer will give all your domino moves a really tough examination.
You can really exploit pyschological warfare by getting into the minds of your opponents. Alternatively it's actually a good way of swapping hints and tips in a friendly environment.