Prace nad Unrealem rozpoczęto w połowie 1994 a grę wydano w 1998, natomiast DNF rozpoczęto w 1997.
Reszta jest milczeniem
A tu ciekawostka, czyli wypowiedzi developerów na tematy premiery DNF w różnych latach
"We're confident that DNF will be one of the greatest, if not the greatest, game of 1998. And this confidence is not misplaced." - Scott Miller, 1997
"Duke Nukem Forever is a 1999 game and we think that timeframe matches very well with what we have planned for the game." - George Broussard, 1998
"Trust us, Duke Nukem Forever will rock when it comes out next year." - Joe Siegler, 1999
"When it's done in 2001." - 2000 Christmas card
"DNF will come out before Unreal 2." - George Broussard, 2001
"If DNF is not out in 2001, something's very wrong." - George Broussard, 2001
"DNF will come out before Doom 3." - George Broussard, 2002