1997 - 1998 - 1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011
Duke Nukem Forever screenshots from 1998
The first two screenshots were released by 3DRealms shortly before deciding to scrap everything that was done with the Quake 2 engine and restart the development with the Unreal engine.
The other screenshots were sent by 3DRealms to Computer Gaming World and GamePro, at about the same time.
The penultimate one is from PC Games.
The last picture is a photograph that shows a level designer making a level with QuakeEd.