Alamo - the engine used in Star Wars: Empire at War by Petroglyph Games.

Alamo Game Engine is a game engine developed by Petroglyph, which is used to create the real-time strategy games Star Wars: Empire at War, and Star Wars: Empire at War: Forces of Corruption. A modified version of the Alamo Game Engine was used for Petroglyph's third title, Universe at War: Earth Assault.

Petroglyph Games

Petroglyph Games is a video game developer based in Las Vegas, Nevada. The company was formed by a group of former Westwood Studios employees who had resigned when Electronic Arts merged Westwood Studios into the EA Pacific studios in Los Angeles to form EA Los Angeles. Other former Westwood employees initially accepted EA's relocation offer, but eventually returned to Las Vegas to work with Petroglyph. Coincidentally, the old Westwood Studios building is not that far away from the current Petroglyph building.

Petroglyph is primarily known for their strong experience in RTS game development. The company's founding members have worked on seminal and influential games in the genre, most notably Command & Conquer and Dune II, which established the template for modern RTS games. Petroglyph Games' employees average more than 12 years of industry experience.

  History
Petroglyph Games is formed on April 1, 2003.
On June 25, 2004, the company moved into their own building.
On November 16, 2004, Petroglyph announced a project which they were working on, a new Star Wars real-time strategy (RTS) game called Star Wars: Empire at War, which was released on February 16, 2006.
On September 12, 2005, it was announced that they would be working on an original military/sci-fi RTS franchise with Sega.
On January 27, 2007, Petroglyph announced their second game, Universe at War: Earth Assault. Universe at War was released on December 10, 2007.
On April 15, 2008, Petroglyph announced that they would be working in partnership with True Games Interactive on a Free-to-Play micro-transaction based online game for the PC.
On December 4, 2008, True Games Interactive/Petroglyph revealed their new game is called Mytheon, to be released in Quarter 3 2009.
On April 27, 2009, it was announced that Petroglyph would be working on a massively multiplayer online real-time strategy game (MMORTS) with Trion World Network.