I love CDDA, but it is not really that similar to DF. It's a very punishing rougelike with a huge amount of depth, but it's an RPG style game, not a strat/base management game, and it doesn't create a procedural story with Rich depth, it was some fun depth, but that's coded in by the developers.
HN crowd might be impressed by the scale of the contributors though. Last I checked it has over 1.1k contributors. Just cloning the repo takes a while.