Zeus: Master of Olympus (Zeus) is a single-player strategy game developed by Impressions Games and published by Sierra Entertainment. It is considered to be an additional installment in the City Building series of games. Like previous titles in the series, Zeus focuses on the building and development of a city in ancient times. The game features a number of changes from previous titles in the series, including being set in Ancient Greece as well as changes to certain gameplay mechanics; however, it is considered to be in most aspects very similar to its predecessor, Caesar III.