It’s fun to watch an ongoing, quickly moving project like this. As Tom Copeland mentioned on ruby-talk, you can see the CVS age sticking around in minutes (and not hours or days).
When it’s finished, Gambit looks like it’s going to be something fun to play with:
Gambit is pure Ruby framework for building multiplayer Web games offering two key services: Game management and design tools. Gambit can manage player's accounts, game hosting and joining, player histories, in-game communication systems and out-of-game notifications for in-game activities.
It’s nice to see these RubyCentral CodeFests starting to happen.