Found this text based fortress building/ adventure game called Dwarf Fortress (http://www.bay12games.com/dwarves/). It looks like a really fancy MUD with a crazy amount of depth. I'll be checking it out soon, and thought others on this site would like it too. Not 100% sure what it's all about, but it has a crazy large fan base. :) Let me know what you think!
Lots of my friends play DF and love it, I should really give it another go.
Seems to be mainly famous for having apparently the best bug reports of any game ever. :P