Jay at SFX-360 says:
"15 Years, a mountain of jokes, countless E3 teasers, and now finally the longest delayed vaporware in video game history was released on June 14th 2011. This is a day that shall mark not only the death of an era, and hopefully those jokes, but the beginning of a new one. Not much has changed in 15 years, and that is the joke.
If you’ve managed to live under a rock the last decade and a half, Duke Nukem Forever is the sequel to Duke Nukem 3D, which was at its time considered hilarious, with fantastic gameplay. It had a few follow up expansion packs, and was beloved throughout the gaming world."