I've been playing this new-to-me freeware game called Dwarf Fortress: cracktastic. One of the most addicting and engrossing games I've ever came across, largely because the artificial intelligence endlessly engaging. Be warned: DF has an incredibly steep learning curve, but the Dwarf Fortress wiki will be of enormous help.
If anyone else plays, shoot me an email!
I downloaded it last night and generated a world. Ah, the world of text graphics! It reminds me of endless hours in college playing Moria. (And finishing it, though I'm not sure that I should be proud of that.)
I'll look over Dwarf Fortress next week and see if I'm still young enough to have the patience for it. I probably spent two hours last night just figuring out the help system, icons, and basic building menus.
Like I said, the learning curve is high, but the wiki will help out a lot. The game is seriously cracktastic, I think you'll like it.