[4] In addition, the Unreal Engine has been widely licensed for games such as the Tom Clancy's Rainbow Six series, Splinter Cell, and America's Army.

The available combat modes are: GameSpot named Unreal Tournament 2003 the best computer game of October 2002.

[11] In the United States, Unreal Tournament 2003 sold 360,000 copies and earned $13.6 million by August 2006.

At the time, this led Edge to declare it the country's 45th-best-selling computer game, and best-selling Unreal title, released since January 2000.

[12] In December 2002, the game received a "Gold" sales award from the Verband der Unterhaltungssoftware Deutschland (VUD),[13] indicating sales of at least 100,000 units across Germany, Austria and Switzerland.