I've always heard good things about it too, but glancing over some screens and what not, I just don't know.I never played much AC so I'm not as qualified as some other people; but from what I hear, Alpha Centauri is much more than just "Civ in space". I have friends who are die-hard AC fans, but don't like the Civ games because of how simple/dumbed-down they are from AC.
I'm already over 50 games in my GOG account, I don't really want to grab something else if I've basically already got it.
I've played the Populous games on my Amiga, so I'm a little burned out on that.
Thought I had a copy of Dungeon Keeper laying around, but it might be Stonekeep.
I have all the (real) SimCities, so there's not really anything else in this batch :\