Gamespot has an exclusive Civilization 4 preview up.
There comes a new addiction. Damn Firaxis!
Game will be out at the end of next month.
After your first city is built, one of the first things you'll need to construct is a worker unit, which can construct improvements on the land outside your city. In previous Civs these improvements were limited to a handful (road, farm, and mine), but now there are a plethora of different resources and improvement options at your disposal. For example, you can now build windmills atop hills, watermills on rivers, wineries in vineyards, and much more. It can seem a dizzying array of choices, but thanks to automation, all you have to do is let the artificial intelligence take control of your worker, and it will go about building the best available option on each square, as well as link your cities together by roads.
One of the new concepts in Civ IV is that other civilizations need permission to cross your borders in peacetime, which means that under certain conditions you can fence off your rivals to large portions of the continent, letting you settle it at your leisure. On the flip side, the same thing can be done to you, in which case you may need to negotiate open borders so you can slip your settlers through a rival's territory to get to new land.
The combat system has undergone a lot of work from previous Civs. The new strength rating goes a long way toward determining the course of a battle. It may sound like a simple idea--the "stronger" a unit, the better its odds--but it's one that has eluded earlier Civs for some reason, as you can hear countless stories about a Stone Age spearmen unit defeating a modern-day tank. In Civ IV, strength goes a long way toward nullifying a lot of those situations, and we saw elite, modern-day Navy SEALs defend a city against waves of less advanced units.
You're also making decisions about your government, as well as your religion. Gone are the classic government "archetypes" found in previous Civs, such as democracy, communism, and feudalism. Now there's a civic system that lets you tailor various aspects of society (government, legal, labor, economy, and religion) in a number of ways.
There comes a new addiction. Damn Firaxis!
Game will be out at the end of next month.