I took part, and made a game which is part match-em-up, and part strategy/RPG, which I called Omega Men. I also made a video diary of my experience, showing how the ideas and game evolved during the time period.
The game itself is playable here: Play OMEGA MEN
Feel free to leave your feedback here on the blog or on my Ludum Dare competition page!

I really enjoyed doing this, and it was a great way to try out some new ideas. This is something I plan to do a lot more of in the new year - it's a good way to generate fresh material after a year spent mostly on Greedy Bankers!