Yep. I had the first four versions. Didn’t quite get into Civ 4, but played the first three far too much.
I would like to jump back in again, but I said to myself: “I have a book to write. I can’t do both.” Now, the book is done (see http://www.tiereddemocraticgovernance.org/dfp-chapter.php), I can go back to Civ.
But my head is filled with two sequels, demanding to get put down on paper.
I think my wife would prefer I write the sequels.