FindYourTeammate is a project mainly written in Python, it's free.
A simple little party game engine for finding your teammate in a crowd. I made this for my daughter's birthday party in a hurry, but it has potential for something larger.
Built using Python 2.6+ Requires Jinja for output ... http://jinja.pocoo.org/
(Sorry, it spews output into the cwd and everything is hardcoded for now)