The longest running game development hell just keeps on ticking. For the
second third time though a trailer exists of the game … for the back story on the long running story see here.
Duke Nukem Forever (DNF) is a first-person shooter video game being developed by 3D Realms, and is the next game in the Duke Nukem series. It is infamous for its protracted development schedule, which began in April 1997. The game has been hindered by poor management, several internal rewrites, as well as engine technology restarts. On December 19th 2007 the newest teaser trailer for the game was released with a full trailer expected later. – Wikipedia
Trailer for the 2001 build of the game.
Trailer for the 1998 build of the game.