The first 3 Duke Nukem games. The reason why varies depending of the game.
Duke Nukem 1 (or Duke Nukum) didn't aged well because of some of the negative staples of old PC platformers. The level-design revolves around exploration to get keys and open doors to progress, and it DOESN'T give you a map (at least the levels aren't that big), and the game has the same boss at the end of every episode, the only thing that changes is the arena (and the one in episode 2 is a assault to the eyes like Bip Bop II's backgrounds). Also, those FUCKING BLUE ROTATING PILLARS! Do NOT play this game with headphones if you love your sanity and ears.
Duke Nukem 2 has some improvements over the first one, you can shoot up (and down when you are in a rope), there's new weapons, and it has a kickass soundtrack. But it brings the same problems of the first game and make some of them worse. The level-design is bad, there are some dickish enemy placements, and the bosses take FOREVER (no pun intended) to beat since they are badly designed.
Duke Nukem 3D is the opposite. As far as FPS go, it aged pretty well on the gameplay department despite it's flaws (at least for me it did), the same I can't say about the sense of humor however... Yeah, it's a dead horse at this point but it's hard not to mention it. It's not entirely unfunny, I can laugh at some moments and hey, I can like toilet humour, IF done right and it's not the ONLY thing that characterizes the game. What bothers me the most about DN3D humor is not even the sexist part (it still bother me, but not in the same degree as it bothers other people), it is the fact that the writers really intended this to be a parody of action hero movies, but their idea of parody was "cram as many quotes and pop culture references we can". We see that a lot today in many games like the Borderlands series, but DN3D was the one that started this trend and had it as it's only notable characteristic, aside being "edgy".
Looking back at the older platformers, I think the humor on them was better. Sure, it was silly and nothing groundbreaking, and some lines were so-so, but there's a weird charm on some of the dialogue and Duke feels more of a parody there (Duke Nukem 2 instructions note about the score items being Duke's merchandise is that "Duke is so vain, he enjoys ammasing his own memorabilia."; also the line in the first game where he says that he's going to beat the bad guy in time to watch Oprah). In DN3D, it feels that he became what he was supposed to parody instead of being a parody, which is one reason why DN3D didn't aged well with it's jokes.