This game is fantastic. There are so many different settings to be used in generating your game - from different map sizes, land volume, alien activity, even erosion levels. Not to mention what 8 different difficulty settings for the AI. So many different ways to play this game, different paths to take. It is a true gem of a program. I have played SMAC for many years. I just recently found GOG while looking for another tbs game - Masters of Magic. I had hoped that the expansion for SMAC would be available from this site after finding MoM here. So let us hope for Alien Crossfire.