From Wikipedia Star Wars: X-Wing is the first LucasArts DOS computer game set in the Star Wars universe, as well as the lead title in the X-Wing computer game series. It simulates the experience of combat in the A-wing, X-wing, and Y-wing starfighters of the Rebel Alliance. X-Wing was built on an evolution of the same game engine that underlay the Air Combat Classics series of World War II flight combat games, (Battlehawks 1942, Their Finest Hour: The Battle of Britain, and Secret Weapons of the Luftwaffe), that were developed by Lawrence Holland for Lucasfilm Games. X-Wing's main advance is that it features a fully 3-D engine for the flight combat simulation instead of the bitmaps and sprites of the earlier titles.