One of the best shooters ever made.
Now when Doom came out, it was really immersive, but you just played as a nameless space marine, putting in key cards and killing demons. Duke Nukem goes to the next level. Duke is a stereotypical action hero and always says cheesy one liners. I love it! Duke is such a likeable character. The game is just awesome when you are kicking the guts out of a pig cop. If you have never played this game, what are you doing?
It might of come out in the same year as Quake, but the game was still awesome. It still looked better than a game like Doom, but it isn't about graphics. The game is so interactive. Press E on a toilet and you'll use it. Kick a bin and a dent will appear on it. Press E on a stripper and they will flash their boobies at you. Its excellent.
There aren't many flaws. If you don't feel like buying it, download the shareware version and the EDuke32 source port! You won't regret it.