Well, Terror Stars aren't there every game, are they? I mean, considering the expense, I normally don't build them unless I'm really drowning in cash and far ahead the other races.

No matter how many new races they introduce, the first five will always be my favourites. They actually have distinct personalities, and their interaction with each other (and the player) was pretty cool. The Drath and Korx were nowhere as interesting, nor were the Iconians and the Thalans.

Also, although the graphics were admittedly a little simple, the depth of the game is impressive, especially if you elect not to go the Conquerer path. I like how they will grovel for peace if they're losing a war, or demand tribute if they happen to be the overlords. There's nothing more satisfying than tipping the balance of a long war by cajoling a major trade partner to join the war on your side.