* BrokenBase:
** There is not generally much overlap between fans of the Interplay/Obsidian games and fans of the Bethesda games (though exceptions exist), and the disagreements between the two groups can get rather… [[SeriousBusiness vehement]]. It even spills over to TVTropes - much of this page's edit history can be summed up as a permanent low-intensity Administrivia/EditWar between ''Fallout 1'', ''2'', and ''New Vegas'' fans and ''Fallout 3'' and ''4'' fans.
** There is even a splinter group of ''Fallout 1'' fans that dislikes ''Fallout 2'' because they felt it introduced "too many silly elements" to the universe.
* ComplainingAboutPeopleNotLikingTheShow / FandomBerserkButton:
** Saying anything negative about ''any game in the series'' with the exception of [[AcceptableTargets Brotherhood of Steel]] will usually get you yelled at, and called either a 'stupid Bethesda fanboy' if you complained about the first two games [[MyFriendsAndZoidberg or Tactics]], or a 'stupid NMA troll' if you complained about ''3'' onwards.
** Notably, the biggest mistake you can make is complain about the graphics in the first two games. Tends to cue a lecture on the character models being actual clay models.
* CompleteMonster: [[Monster/{{Fallout}} Has its own page]]
* CrowningMusicOfAwesome: ''Fallout: New Vegas'', FrankSinatra, NO EXCEPTIONS (And that's just the teaser!)
* DemonicSpiders:
** ''[[MemeticMutation Jesus Christ it's a Deathclaw - get in the car!]]'' In most games, deathclaws are among the deadliest enemies. Strong, tough, and fast.
** Obsidian decided to go above and beyond in New Vegas. Not only is there no dart gun, which was effective against deathclaws in ''Fallout 3'', but they now come in packs and have titanic damage thresholds, meaning most (as in, everything smaller than the anti-materiel rifle) will only do ScratchDamage. Thankfully, they now can't spawn randomly. You'll know where they are.
** Yao Guai are the not-quite-Demonic cousin of Deathclaws. They're easier to kill and do less damage, but unless you're high level they are still dangerous, especially in packs.
** ''Broken Steel'' adds in Super Mutant Overlords. You won't encounter them until you're a pretty high level, but they're equipped with powerful weapons and are ridiculously tough. To make matters worse, they have an unblockable damage bonus of around 20-40 HP per shot depending on the weapon. Even wearing power armor and toting a rocket launcher, your ass may well be handed to you.
** Overlords are nothing compared to the Albino Radscorpions, which have almost as much HP as a Super Mutant Behemoth! Their only saving grace is their lack of a long-range attack, so you can get out of dodge by climbing on top of something they can't reach you from. That said, considering their durability and damage potential, running the hell away is a good idea too.
** And rounding out the ''Broken Steel'' trio are the Feral Ghoul Reavers. Oh hey, they look just like Feral Ghoul Roamers, piece of ca- WAIT WHAT.
** Damn those swampfolk/tribals and that magical unresistable damage bonus!
** Any player trying to do "Those!" at any level below ten or so will find the fire-breathing ants a hell of a challenge. Sometimes it's an easier and smarter idea to just kill one ant on the street and just do the quest later in the game, so that their levels stay somewhat low while you have a wider arsenal to gun them down with. Or just stand on the ledge outside of town and snipe them.
** The Enclave patrolmen in ''Fallout 2'' were the bane of players everywhere. They are pretty much immune to electric damage and heavily resistant to nearly every other kind of damage due to their power armor, not to mention they have extremely high health and can effortlessly kill you in one turn even without a critical hit. Because of them, going anywhere near the coast until you've reached near endgame levels was instant DeathWish. Unlike most DemonicSpiders however, it's pretty easy to tell where they are and which places to avoid (anywhere near the coast pretty much).
** Those stealth suited aliens. Hell, you feel pretty stupid by shooting a mini nuke to a 3 foot tall guy and watching he shoot back at you with his alien rifle just after.
** Any kind of robotic enemy will be a huge pain in the ass as well. Did you remember to invest some skill points in energy weapons, despite usually never coming across one until at least the halfway point? You better, because energy weapons and explosives are the only way to deal reliable amounts of damage. ''New Vegas'' mitigates this somewhat by offering armour piercing rounds and pulse slugs to give small gun users a fighting chance.
** ''New Vegas'' introduces Cazadores, which are giant mutant wasps with nasty venom that drains your health ''very'' quickly long after you've killed one. [[OhCrap Pray you don't encounter a swarm of the bastards]].
** ''Fallout Shelter'' makes Radroaches (yes, ''[[TheGoomba Radroaches]]'') into these. As their power levels scale with the age of your vault, they can eventually easily kill your dwellers, spread like wildfire, and overrun your vault unless you have top-tier equipment and good dweller placement.
* EarWorm:
** Galaxy News Radio in ''Fallout 3'' plays only the most catching ([[SuspiciouslyAproposMusic and appropriate]]) songs of the first half of the 20th Century--[[ContinuityNod including "Maybe," by The Ink Spots from ''Fallout 1'']].
** He keeps hackin’ and wackin’ and smackin’, He keeps hackin’ and wackin’ and smackin’, He keeps hackin’ and wackin’ and smackin’
** [[Theatre/SouthPacific I'm as]] [[{{Mondegreen}} corny/horny]] [[Theatre/SouthPacific as Kansas is August, I'm as normal as blueberry pie…]]
** I've got spurs that jingle jangle jangle (jingle jangle) as I go riding merrily along (jingle jangle)
** "You had plenty of money in 1922 You let other women make a fool of you. Why don't you do right? Like some other men do…"
** Biiiiiiiiiiiiig irrrrrrrronnnn, big iron!
** And the BadAss trailer for Fallout 3. ''I love those Deeeeeeaaar hearts, and geeeentle people, who live in myyyy hometown…'' Too bad it didn't make it into the soundtrack.
** "I don't want to see the woooorld on fiiiirre…"
* EnsembleDarkhorse:
** '''LIBERTY PRIME'''
** Also Charon. He is a ghoul with missing skin and hair but somehow still got tons of fangirls. It may be related to the whole [[FetishFuel "total obedience to whomever holds his contract"]] thing.
** Freaking [[BadAss Fawkes]] from the same game. A {{Badass}} Super Mutant who is actually one of the few nice guys in his species, wields [[GatlingGood a Gatling Laser]] in ranged combat, is a GeniusBruiser with the strength of a PhysicalGod and frequently saves your ass? [[SarcasmMode Yeah, the fandom are really going to hate him.]]
*** The fact that he's a reward for being a good guy doesn't hurt, either. Androcles and the Lion - but this time, the lion has MoreDakka.
---> '''Fawkes:''' ''Too fun!! Ha haaa!''
** In ''Fallout 1'', Dogmeat. So much so that he reappeared in a special encounter in the sequel and had an IdenticalGrandson in ''Fallout 3''.
** Don't forget Marcus from ''2'', he's pretty much the reason why Fawkes is so well liked.
** [[ColdSniper Boone]]. [[MemeticBadass The guy can take out]] [[ImprobableAimingSkills enemies before you even see them.]]
** The Brotherhood of Steel, for consistently having the best toys (aside from the Enclave.) It certainly doesn't hurt as well that their signature PoweredArmor is the face of the first and third games, and they're the ones who bring Liberty Prime to life. This even reached BreakoutCharacter status with two spinoff games being made about them.
* FanficFuel: A common sub-genre of ''Fallout'' fanfiction asks the question of what happened in the parts of the US not seen in the games- what helps is that no game so far has taken place away from the East or West coasts, allowing for a lot of interpretation as to the fate of the midlands of the US.
* FanonDiscontinuity: Hardcore fans generally refuse to acknowledge the existence of the ("good for what it is") TacticalRPG ''Fallout Tactics: Brotherhood of Steel'' or the console hack-and-slash ''Fallout: Brotherhood of Steel''. {{Creator/Bethesda}} have adopted a similar policy, declaring ''Tactics'' BroadStrokes canon and ''Brotherhood of Steel'' CanonDiscontinuity.
* IAmNotShazam: The Vault Boy is '''NOT''' called [=PipBoy=]. Even the developers of ''Fallout Tactics'' fell into that. Vault Boy is the blond, wavy haired man in the blue jumpsuit, and [=PipBoy=] is the redhead pixie in the yellow and orange spacesuit, in case you were wondering.
** And his name is '''not''' FallOutBoy either, despite his face being prominent in all ''Fallout'' games.
* GameBreaker:
** The Sniper perk in the first two games. With high luck, almost every hit will be a critical hit ('''always''' with a Luck of 10!). Combine with shots to the eye and a decently powerful weapon and only the strongest enemies will survive more than one round of combat.
** Jinxed with Luck 10. Your obscene luck (usually) counteracts the negative effects of the perk, but your enemies will constantly be hitting themselves, each other and breaking their guns and limbs on a regular basis. Although this means that the rest of your party become a lot less helpful and much more dangerous to you.
** Some of the special encounters that you come across in the Wasteland in 1 and 2. The crashed Nuka-Cola truck which gives you over 10,000 caps at a high enough Luck level, the Alien Blaster, the Solar Scorcher, the Red Ryder LE BB Gun, the Holy Hand Grenade, the Monument Head and the Star Trek Hypos.
** ''Mothership Zeta'' DLC. After finishing, you end up with a huge amount of super healing stuff, overpowered weapons and ammo for those weapons. Good bye scavenging and weapon maintenance, hello Alien Desintegrator!
** Finishing ''Operation: Anchorage'' will unlock a chamber filled to the brim with awesome weaponry, plus two game breaking suits of armor. The Chinese Stealth Suit always gives you 100% stealth (and allows you through a glitch to wear all the clothing you have in your inventory at once, giving multiple armor and stat boosts at once), and the Winterized Power Armor, which never degrades and allows you to circumvent the usual restrictions to wearing Power Armor before completing the required story mission.
* GenerationalSaga: Never explicitly stated, but some options on [[MultipleChoicePast the Courier's history]][[note]]Especially with Honest Hearts DLC[[/note]] allow the interpretation that s/he's descended from the Arroyo tribe. In full effect for Fallout 1 and 2, as the Chosen One is the Vault Dweller's grandchild.
* GoddamnedBats:
** Geckos in ''Fallout 2'', especially around Trapper Town/Klamath. *HeadDesk*
** Bloatflies and pretty much every other insect in ''Fallout 3'', unless you have the Entomologist perk.
* GoodBadBugs:
** With ''Broken Steel'' installed, Three Dog will talk about [[spoiler:the Enclave's defeat at Jefferson Memorial]] ''even if you haven't gotten that far in-story''.
** Sometimes in ''Fallout 1'', the aftermath of [[spoiler:the slaughter of the ghouls at Necropolis]] will sometimes leave the dead bodies standing upright in the first frame of their "explosive death", as if they're mindless flesh statues. It's very creepy when you're wandering around looting them.
** Similarly, in ''New Vegas'', there's a room in Gommorah [[spoiler:with a dead hooker in it that you visit for a quest. Sometimes when you enter she'll be standing and acting as a life NPC, even trying to seduce you, while you examine her for rigor mortis.]]
* HilariousInHindsight: A character in combat armor around the Boneyard Library (''Fallout 1'') wears a pin reading "I'm Christopher and you're meat". Chris Avellone joined production for ''Fallout 2'', and has become the name most associated with the franchise.
* MisaimedFandom: Though the Legion burns down towns regularly (inhabitants included) and the Enclave was more or less written as "Futuristic Nazis", both have large fan followings among the Fallout community, partly because many see them as [[WellIntentionedExtremist noble in their end goals]].
* NightmareFuel: Enough to fill [[NightmareFuel/{{Fallout}} a dedicated page]].
* ParanoiaFuel: Sometimes, your settlements can get infiltrated by Institute Synths in disguise. There's no knowing about them until they start killing your population slowly...
* SailorEarth: Want to make an original character who ''also'' grew up in a vault? Easy, just make up a number between 001 and 999 and add the word "Vault" infront of it.
* SpiritualLicensee: The games made during Bethesda's run (''Fallout 3'', ''Fallout: New Vegas'', and ''Fallout 4'') could easily double as RPG spin-offs of the ''Franchise/MadMax'' and ''Franchise/{{Terminator}}'' series. Fittingly enough, some of Bethesda's earliest video games were based on the latter franchise.
* TakeThat: At those who idealize the past, and wish they born in a time other than the period they live in now. Applies to the 50's in particular.
* UncannyValley: The characters from all of the games, to some degree.
** TheMaster from the first game is most definitely an intentional version, [[NightmareFuel and a damn creepy one as well.]]
* TheWoobie: Harold in the three main games. He has lost just about everything he had by the time you see him in the first game, and suffers a FateWorseThanDeath in the third. At least you can actually do something about his situation in that case (or don't, if [[spoiler:you choose to restrict his growth instead of mercy-killing him or expanding his fertility. Thanks, [[WhatTheHellPlayer jerk]].]]).