From there website:
What is NH Game Jam?
The NH Game Jam as an event and an idea was born in early 2013 around the thought that there should be a “board game hackathon”, and so we decided to make one. While its founding lays deep in the heart of an analog jam (ie, board and card games), the NH Game Jam fully embraces both digital and analog games and will serve as a simul-jam (thats a word). The inaugural NH Game Jam will take place May 10-12 2013 at the abi in Manchester NH.
Just signed up. It sounds pretty fun and is only $10.