Civilization III: Conquests is the largest enhancement
Civ III has seen to date. Seeing as how the only other expansion is the Multiplayer pack called
Play the World, which comes with
Conquests, there isn't really a water mark to measure against. However, what it delivers is good and sets a pretty high standard for any future expansions.
The biggest additions are stated in the title; Conquests. Pre-set scenarios were lacking in Civ III, and Conquests more than makes up for it. Nine scenarios in all are available, each focusing on a different aspect of new game rules. The setting for these scenarios range from ancient Rome to WWII, and include just about every major period of the civilized world in between. History buffs, it is time to rejoice.
The rest of the goods come in the form of micromanagement stuff. Seven new units, some civilization specific, along with a whole slew of new tribes can be found traversing the maps now. There are also two new government types, Fascism and Feudalism, along with a reworking of the preexisting ones.
A few new wonders, one being the Internet (now you can take the claim from Al Gore), and some city improvements are also thrown in for good measure. These, along with a whole slew of new victory conditions, make it possible to play shorter, more timeline specific games that regular people will be able to finish in a sane amount of time.