First, make sure you install all of CTF's dependencies:
Node.js
npm
Express
Then, clone the latest code:
git clone git://github.com/stetson/Capture-The-Flag.git
Then run the server:
cd Capture-The-Flag
node server.js
Additional documentation is available in the docs folder:
/docs
/end-user End-user documentation
/frontend Frontend API documentation
/backend Backend API documentation
If you have any additional questions, or think you have found a bug, feel free to open an issue on the issue tracker, and we'll get back to you as soon as possible.
-The Capture the Flag Team