Whilst not inherently a game site, I installed this function just to test it out, as it works very well with Community builder. It gives a great view of the members and would appeal to a site aimed at youngsters/teens and provide a competitive forum that would bring them back to play. It wasn't for me as the games were a little extra for the members and not a major facet of the website (being more physically sport based). With community builder and careful selection of games, it would be ideal for making great links and developing customer relations and social interaction with youngsters and the young at heart.
The help from the author, Adam , (a great bloke, who must be a workaholic and a games fanatic) was outstanding, replying instantly to queries over the shoutbox and by e-mail. The home site is a great place to visit, go cat bowling and play other games whilst providing a great demo showing how as a member your scores are instantly displayed on the shoutbox and in the hall of fame. The home site really shows how a community can be developed using games, by providing fun and competition, though whether you would wish your site dominated by these functions is a question you must also ask.