Gnome Fortress...
...is (and it's development was) an absolute trashfire. Hubris combined with a small amount of time do not make a great combination. Had some hardware problems at the very end, too, which probably put the final nail into the coffin for this project.
It was a great 48 hours though, first time in a long while that I've participated in Ludum Dare, had an absolute blast. A fuller post-mortem will be written later.