http://nowjs.com/rtt The NowJS Realtime Trials is a monthly hackathon lasting two weeks. Each week there is a new theme focused on intresting applications of realtime technology.
The theme for Realtime Trials #1: Realtime games
Rules - You have two weeks from 6:00PM PST September 16th to 6:00PM PST September 30th to build your app - You can conceive and plan before this time period - Your app must be built with NowJS - Teams can be 1 to 5 people - Projects will be judged by a panel of seasoned hackers and entrepreneurs
Our website: http://www.crashspace.org