Caesar IV is a city-building game set in ancient Rome, developed by Tilted Mill Entertainment. The game was released on September 26, 2006 in North America. The game features a three-dimensional game engine and individual modeling of game character behaviors. Like its original release Caesar in 1992, the game simulates city administration in historical Rome. Like its sibling release Children of the Nile in 2004, the game continues a new trend in the city building game genre to use more interactive and detailed game design and play. A demo was released by Tilted Mill on August 16, 2006.