* SugarWiki/AwesomeMusic: The main theme, [[http://www.youtube.com/watch?v=CezOHqlXAFY "Grabbag"]], to the point that even Music/{{Megadeth}} {{cover|Version}}ed [[http://www.youtube.com/watch?v=7uVmhy3yDwg it]].
* DemonicSpiders: The Inflatable Sea Monsters in Duke Caribbean relentlessly barrage you with missiles the millisecond you come into sight, usually from around a corner and with absolutely no warning. Thankfully, they go down with only one shotgun blast, but expect to do lots of SaveScumming.
* EarWorm: "[=GrabBag=]", the title music of ''[=DN3D=]''. An MP3 of it is available for download from the composer's site, and the MIDI files of it [[http://leejacksonaudio.lbjackson.com/ are available as well.]]
* GoddamnedBats:
** The Protozoid Slimers, which hatch from eggs, hide in vents, and climb up on your screen, tearing you apart unless you kick 'em quickly. They're pretty hard to hit in the open, too. [[GlassCannon Luckily one hit of anything kills them]] if you can connect, including the otherwise damage-less Shrinker.
** Sentry Drones. They explode on contact, they often hide right behind doors or around corners, they can take a lot of damage, they make [[MostAnnoyingSound irritating noises]], and they're ''everywhere''.
** Literally appear in Lame Duke (at least episode 2 level 1), as this beta version features a bat enemy which was dropped from the final game.
* GoodBadBugs:
** In [=v1.3D=], you could select the Mighty Foot as a weapon and then kick with the melee button, at the same time! Result: Duke somehow manages to run around while both of his feet are on screen, whacking enemies. (Un)fortunately fixed in later versions.
** The Build engine is notorious for its flaws that allows mapmakers to come up with interesting map ideas. [[http://dukerepository.com/maps/Bizarre Bizarre]] takes this fact and drives it straight into MindScrew territory.
** There is the possibility that you can die as you're exiting the level. If that happens, you start the next level with your stuff intact and 100 health.
** In the Playstation Vita version, the final level of The Birth has an area where you can clip out of bounds with the help of those rotating gear-shaped things in the water. This counts as completing the level even though only the first half was completed, and will even give you the trophy for beating it. However, you'll be sent back to the cutscene from before entering the first level.
* SugarWiki/{{Heartwarming Moment|s}}: The ending of ''Duke: Nuclear Winter'', with a happy snowman thanking the player for SavingChristmas and a poetic parody of ''Literature/TwasTheNightBeforeChristmas''. All set to the tune of "Christmas Eve Sarajevo 12/24" by the Trans-Siberian Orchestra playing in the background.
* HilariousInHindsight: The "San Andreas Fault" secret in [=E1M5=], The Abyss? That's one year before the first [[VideoGame/GrandTheftAuto GTA]] hit the shelves![[labelnote:*]][[SequelDisplacement And in case if you forgot,]] this one also has the city of San Andreas and said fault is actuall real.[[/labelnote]]
* SugarWiki/MomentOfAwesome: At the end of episode 2, before fighting the boss, Duke states that he'll rip off his head and shit down his neck. Cut to the post-boss battle cutscene where Duke follows through on the promise.
* NightmareFuel: [[NightmareFuel/DukeNukem3D Has its own page.]]
* OnlyTheCreatorDoesItRight: Nuclear Winter is the least liked expansion pack, and the only one 3D Realms didn't make. It doesn't help that the first two levels are just remixed versions of ones from the base game.
* PortingDisaster: The Tiger Game.com version. In fairness, it was actually one of the most advanced handheld games of TheNineties; there was just no way to replicate the ''Duke Nukem 3D'' experience on hardware barely equivalent to a GameBoy.
** Less so the MegaDrive port. It does have a pretty decent framerate, considering how big the "first-person view" screen is, compared to other [=FPS=] games on that console, not to mention the save system which allows you to backup everywhere. Nothing else makes up for it properly, though: the whole port consists of 9 new levels, very loosely based off the Lunar Apocalypse episode, all done in a [[VideoGame/Wolfenstein3D Wolf3D]]-like perspective, all peppered-up with barely audiable music and slightly messy controls. [[labelnote:*]]And that's not even for Duke himself: in order to pause the game, you will need to not just press the Start button, [[DamnYouMuscleMemory but also X, Y and Z,]] all at the same time![[/labelnote]] Oh, and it didn't help that shortly after the game was released in Brazil (the only country that received a Mega Drive port), the whole thing got banned.
* SequelDisplacement: Anybody remember ''VideoGame/DukeNukemI'' or ''[[VideoGame/DukeNukemII II]]''?
* SuspiciouslySimilarSong: The first level of "The Birth" is called "It's Impossible", and it's theme is called "Missing Impossible", and it is (very) reminiscent of ''Series/MissionImpossible'''s iconic theme.
** One of the "Duke Caribbean" levels has music that is very similar to the theme for ''Series/HawaiiFiveO''.
* [[ThatOneLevel That One Episode]]: Episode 4 in the PS1 version (especially on [[IdiosyncraticDifficultyLevels Come Get Some]]) due to the shortage of ammo throughout the levels.
** Episode 1, level 3 features a ridiculously-tricky segment where you have to jump and duck past a bunch of infrared laser sensors. If you hit one of the lasers, bombs go off and kill you instantly. Not to mention that some pig cops are on their way to kill you as well. And if THEY hit the lasers, it also triggers the explosions.