Agon is the system which we used to add global high-scores, achievements and social networking features to Super Juicy. It is a really great system. The code is very clean and easy to use and it is non-intrusive to your game. Users that like this sort of thing get all the features they expect while other more casual players don’t ever have to even see it. Adding achievements to a game is a great way increase the replayability of a game so I highly recommend checking out their system.
Recently they decided to put Super Juicy in one of their featured spots in their portal! Run over there to see for yourself! Agon Online