Age of Empires
"Age of Empires", released on October 26, 1997, was the first game in the series, as well as the first major release from Ensemble Studios. It was one of the first history-based real-time strategy games made, utilizing the Genie game engine. GameSpot described it as a mix of "Civilization" and "". The game gives players a choice of 12 civilizations to develop from the Stone Age to the Iron Age. The expansion pack, "The Rise of Rome", published by Microsoft on October 31, 1998, introduced new features and four new civilizations, including the Romans. Although the two games had contained many software bugs, patches resolved many of the problems.
Star Wars: Empire at War
"Star Wars: Empire at War" was first mentioned in 2004, by then-president of LucasArts Jim Ward. He discussed the possibility of a RTS video game set in the "Star Wars" universe, stating "...there's a bright future there for games based on these new properties as well as original Star Wars games like a new real-time strategy PC game that Petroglyph is developing for next year". Ward described the game as taking the real-time strategy genre in a new direction and outlined plans to balance the gameplay between hardcore games and audiences familiar with the "Star Wars" franchise. The game was unveiled by LucasArts on January 21, 2005 with an original release date set for the end of 2005. LucasArts said that the newly formed Petroglyph Games would be developing an original 3-D game engine, titled Alamo, for "Star Wars: Empire at War" and that the game would support online battles for up to eight players.