World Builder offers a fun accessible way for anyone to create quick, customized scenarios. They can also establish who is at war and each AI's attitude toward every other Civ. Players can determine which buildings are in the cities, how many people live in any city, what each city is producing, what each Civ has researched. They can add rivers, place tiles, resources, roads, improvements, cities, units, and nearly anything else that appears on a map. At any time during a game, players can call up the world builder and change numerous things on the map.

The first level is the World Builder, which is an easy-to-use, yet powerful map editor allowing gamers with little experience to create custom worlds. Our goal is to make this the most moddable version of Civ ever, so we created three levels of tools offering fun, accessible modding options for every type of player - from casual to hard-core. With Sid Meier's Civilization IV, our team at Firaxis is trying to recapture that level of interest and then completely surpass it.

The fact that people are still creating and sharing scenarios for Civ II, is a testament to this theory. The 1996 release of Sid Meier's Civilization II represented a huge step forward for the series (which was originally created in 1991), and the change that probably had the most significant long-term impact on the Civ community, was the addition of the concept of fan-created content.

How to create a custom map in civ iv