Unreal Engine 2 - 2004

Unreal Engine 2 is a game engine developed by Epic Games, first used in Unreal Tournament 2k3.
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Unreal Engine 2
Unreal Tournament 2003 - 2002
Deus Ex: Invisible War - 2003
Postal 2 - 2003
Unreal Tournament 2004 - 2004
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Unreal Engine 3 (2007)