Civ IV ScreenshotIGN has posted an interview with Civilization IV's producer Barry Caudill, who provides more detail on the what's changed since the last Civilization title

  • 3D engine

  • still covers the 4000 BC to 2050 AD timeframe

  • revamped movement and combat mechanics

  • animated, dynamic landscapes (moving cows, flowing rivers)

  • 18 civilizations

  • better AI

  • additional resources for trade

  • new "religion" system for theocratic governments

  • addition of the touchy (but historically accurate) topics of slavery and emancipation

  • elimination of terrorism options (poisoning a city's water supply has become a taboo topic since the last Civ game)

  • the most moddable version of Civilization ever

Visit the folks over at for great commentary and analysis on the IGN interview linked below.

This article was originally published on Joystiq.