Age of Empires
Age of Empires is a series of historical real-time strategy video games, originally developed by Ensemble Studios and published by Microsoft Studios. The first title of the series was "Age of Empires", released in 1997. Seven titles and three spin-offs have been released.
World Empire
World Empire is a turn-based strategy video game, published in 1991 by Viable Software Alternatives. "Risk" is similar to this game in that players compete to conquer the Earth country by country through military force.