* ActorAllusion: One of the roles of Creator/SumireUesaka in this game is the Fubuki-class destroyer. Not exactly important at first glance, but remember that "Fubuki" is Japanese for "Blizzard". Which brings to mind the RedBaron moniker from another character she played: [[AloofDarkHairedGirl Nonna]] from ''Anime/GirlsUndPanzer''.
* AscendedFanon: The anime adaptation takes some in-jokes from both the fandom at large and some of the spinoffs and canonizes them.
** Akagi's BigEater status comes front and center, after Fubuki witnesses the '''huge''' platter of katsu (or bauxite) curry she ordered. Kaga gets foisted with this as well come episode 6 (witness how her curry rice pile is even ''bigger'' than Akagi's).
** Ashigara's desperate SingleWomanSeeksGoodMan ChristmasCake status is also referenced by Kisaragi, after rumors of apparently another failed mixer.
** Inazuma's "nanodesu", despite not being used often in the game proper, turns into a proper VerbalTic, used in all but one of her lines in Episode 2 and it gets over-killed in Episode 6 with about 17 instances of it -- the most of out all Verbal Tic-using characters in the episode.
** Ooi, while not too far on the crazy side in-game, suddenly goes on a RAEG when Naka takes Kitakami's hand. (Naka's trying to get Kitakami to teach Fubuki.) This may have to do with the [[http://www.pixiv.net/search.php?s_mode=s_tag_full&word=%E3%82%AC%E3%83%81%E3%83%AC%E3%82%BA%E5%A4%A7%E4%BA%95bot Crazy Lesbian Ooi Bot]], an [[NeverTrustATitle actual person]] on Twitter who regularly {{Roleplay}}s Ooi and portrays her as an [[ExactlyWhatItSaysOnTheTin absolutely mad]] ManicPixieDreamGirl who only only loves Kitakami.
** Zekamashi, one of the fan nicknames for Shimakaze, gets used by Kongou in episode 4.
** Raiden, a fan nickname for Inazuma and Ikazuchi, also gets used, again care of [[Main/TheNicknamer Kongou]] in episode 6.
** Nagato displaying a much less serious, far more cutesy and goofy side while in private, as shown in episode 8. Mutsu even teases her about it at the end of the episode.
* CastingGag:
** Creator/SakiFujita voices, among others, Fusou, who is envious of Hyuuga. She also voices another Hyuuga, namely the one from Manga/ArpeggioOfBlueSteel.
** A subtle one in Episode 4 (cris-crossing with ActorAllusion): In order to lure out Shimakaze, the Kongou Sisters begin singing on a makeshift stage in the Naval Base's open grounds, only to be interrupted by Naka, the self-proclaimed IdolSinger of the fleet. Not exactly evident, until one realizes that the StarMakingRole of [[Creator/NaoTouyama the seiyuu for the Kongou Sisters]], was [[Manga/TheWorldGodOnlyKnows an Idol Singer as well.]]
* ColbertBump: Originally [[PeripheryDemographic intended]] to be a niche game catering mostly to the military {{otaku}} population with a modest budget and minimal advertisement, its popularity experienced a '''huge''' surge after its players (including, among others, [[Manga/HellSing Kohta]] [[Manga/{{Drifters}} Hirano]], whose HeroicBSOD on Twitter is most commonly cited as the main reason for the popularity surge) spread the word on Twitter and/or Pixiv.
** Kisaragi's appearance in the anime [[spoiler: and being sunk in episode 3]] has resulted in loads of fan artwork of just her, when before she mostly showed up in group artwork or as a background character.
* CommonCrossover:
** The series overlaps quite well with ''Manga/ArpeggioOfBlueSteel'', despite the latter being a much older series, due to their shared reference pool of World War 2 IJN warships.
** There's also frequent crossover fanart with ''VideoGame/ToukenRanbu'', since both games were made by the same company and hosted on the same website, not to mention that most people consider ''Touken Ranbu'' to be ''Kantai Collection'''s SpearCounterpart.
* FanNickname: Rampant.
** "Beaver" for Yukikaze, due to how her top teeth are drawn in her character art.
** "Henderson-chan" among Western players for the Airfield Princess, ThatOneBoss of the Fall 2013 event, due to her being based on the real-life Henderson Field at Guadalcanal.
** "Darwin-chan" for the Seaport Princess, and "Wake-chan" for the Isolated Island Demon. Following the example of the Airport Princess, their nicknames reference the real-world places (which were the locations of Allied bases) they're representing: Port Darwin in Australia and Wake Island, respectively.
** Seaport Princess earned the additional nickname of "[[GagBoobs Oppai]]" for having the largest bust in the entire Abyssal Fleet.
** Many have taken to called Northern Ocean Princess "Hoppo-chan", a diminutive taken directly from her Japanese name. Western players, on the other hand, have started calling her "Mittens". In Japanese, she's also nicknamed "Aku-tan", a {{pun}} on the [[http://en.wikipedia.org/wiki/Akutan_Zero Akutan Zero]] that she carries, with "-tan" also being a childish mispronunciation of "-chan".
** "KTKM-sama" for Torpedo Cruiser Kitakami. The nickname itself is obviously just her name with all the vowels taken off, while the respectful "-sama" is due to the fact that many endgame fleet compositions pretty much ''require'' Kitakami (or Ooi, or ''both'' of them) to work.
** "Tenryuu's Kindergarten", for any fleet composed of light cruiser Tenryuu supported by a gaggle of destroyers (who, like Hibiki and her sisters, are drawn like kids). Supported by the official 4koma, which mentions that Tenryuu is apparently good with kids. Because of her low maintenance cost, she is frequently used in expeditions along with destroyers, and both official 4koma and fanworks reflect this trait.
*** Apparently, Bushiroad has caught onto this and given Tenryuu a skill of gaining power for each Level 0 character on the field in the TabletopGame/WeissSchwarz TCG.
** "Mom" for Houshou. In-game due to her gentle tone of voice and the fact that she has one of the lowest maintenance costs of any carrier. Much like Tenryuu, this makes her ideal for "babysitting" the kids/destroyers.
*** Houshou is also the first aircraft carrier in the world to be designed to be a carrier and finished as such, making her the mother of all carriers (which is also a tag dedicated to her alone). [[note]]The first converted aircraft carrier, as well as the first designed aircraft carriers, goes to the BritsWithBattleships.[[/note]]
** "Nagamon" for Nagato, from an alternate pronunciation of her name kanji. When you see this being mentioned in fan art, you're guaranteed to see her cuter/sillier side being depicted.
** 12-suzu or 十二鈴 for Isuzu, play on both her name and the fact that she remodels at level 12, tying in with the Isuzu Farms entry in MemeticMutation.
** "[[VerbalTic Poi]]" for Yuudachi. This usually refers to her Kai 2 form, which is arguably the most useful destroyer in most situations where you wouldn't otherwise use one, due to her firepower being on par with a heavy cruiser's.
*** Website/{{Pixiv}} denizens have apparently started calling her ''[[NamesToRunAwayFromReallyFast Yuudachi the Destroyer]]'' based on her Kai 2 form's appearance. [[http://dic.pixiv.net/a/%E3%83%87%E3%82%B9%E3%83%88%E3%83%AD%E3%82%A4%E3%83%A4%E3%83%BC%E5%A4%95%E7%AB%8B Here's the Pixipedia entry.]]
*** [[Anime/MobileSuitGundam0083StardustMemory The Nightmare of Solomon]], based on one of her battle-opening quotes. There's [[http://www.youtube.com/watch?v=gPC8o96eYS4 a parody video]] about it.
** Anything perceived to be a common result from anything, be it drops from nodes or results from crafts, will be termed the "Naka-chan" of that node or craft, due to her ridiculous ubiquity in normal ship crafting. For example, Maruyu is the Naka-chan of large ship construction.
** With the addition of I-19 into the roster, her lines towards the player, the pronunciation method to her name (Iku), and well as the way she talks have caused some people to, er, do a double take. This has led to her getting her own tag in Pixiv, '''"Oyogu Juu-hakkin"''' ("Adult(s-Only) Swim," more or less). [[note]]In case you haven't noticed why, I-19 pronounces and spells her name as "i-ku". Guess [[HGame where else]] you might hear these two syllables get used so often...[[/note]]
** "Seal"' for Shimakaze, for her surprised "Au!" reaction. Also Zekamashi, from the kana on the lifebuoy she's sometimes seen with.
** Bismarck is sometimes called "Biscuit" or "Biscuit-chan".
** "Raiden" for Ikazuchi and Inazuma together, as the word is composed from the kanji for Inazuma and Ikazuchi's names.
** "Yaggy", used to refer collectively to Kagerou, Kuroshio, and Shiranui. Comes from a compression of the characters used in their introductory lines and is used in reference to attempts to build Yukikaze (who has the same build time, being of the same class as these three, but is much more rare than them).
** "Orel Cruising", which refers to using a team of subs to farm world 2-3 for fuel and ammo, as well as completing daily and weekly quests on the side.
** '''Kuso teitoku'''/"Shitty admirals", for the clueless posters that could be found ''everywhere'' on [[http://kancolle.wikia.com the English wiki for the game]]. Taken from Akebono's in-game nickname for the admiral, the term is used to describe the (usually anonymous) posters who clog up the Recent Updates or Event pages with their posts, usually with questions whose answers ''should be readily found on the wiki to begin with'', whining about how maps, event or otherwise, are "too hard" (despite the fact that advice on how to clear said maps is ''also'' on the wiki itself), or worst of all, posts about reckless or apathetic behavior (like not caring whether their ships get sunk, mostly due to their own stupidity). Essentially the Kantai Collection equivalent of Frodos from 4chan, or Tomatoes from VideoGame/WorldOfTanks, and equally looked down on by more sensible players. Indonesian players in particular get stereotyped as this (to the point that calling a player an Indonesian is one of the worst insults you can give them), due to one of the Indonesian [=KanColle=] forums giving out rewards to the players that sank the most ships during the Winter 2015 event (up to 2000 DMM points for the winner), and naturally a lot of players took part.
*** Some people would also use this derogatory nickname for admirals who put low-level shipgirls in the first '''''and''''' second slots of their first fleet, then fill the rest with high-level ships[[note]]The EXP gain for [=PvP=] battles are calculated largely on the level of the opponent's flagship and second ship. With this configuration, opponent fleets are denied ship EXP while still having a good chance of being defeated[[/note]], just to deny experience for other admirals in the player-versus-player side of the game[[note]]a significant source of EXP for ships, with MVP gains of around one to two thousand points for one battle[[/note]].
** "[[Franchise/BlackRockShooter Black Wock Shooter]]": Wo-Class Kai Flagship has a blue flame on her left eye. Other remodeled flagships[[note]]the distinctive blue eye-flame is most pronounced on them[[/note]] following this theme have spawned following the Spring 2014 event (usually Ri- and Ru-classes). The general drawing style for humanoid Shinkaisei-kan is also quite reminiscent of Huke's style in BRS.
*** "Yorktown": One of the Wo-Class ships in the anime, due to the theory that the Abyssal Fleet is based on the American Navy and that the battle in Episode 7 is the Battle of the Coral Sea, which Yorktown survived, albeit with heavy damage.
*** Since the end of the anime essentially confirmed the theory of the Abyssal Fleet being the sunken Kanmusu ComeBackWrong, and it's implied that [[spoiler:that specific Wo-Class is Kisaragi]] another nickname is given for her, veering into IncrediblyLamePun territory. Spoilered for both the spoiler and the pun: [[spoiler:Kisa-Wo-gi]]
** Fusou and Yamashiro are known as the "[[BornUnlucky Unlucky]] Sisters".
** Prinz Eugen earned the nickname of "Pringles" within hours of her debut. Some fans also just call her [[Manga/GekkanShoujoNozakiKun Chiyo]]. Both Prinz Eugen and Chiyo have the same voice actress.
** "Shotago" for Atago to some Western fans, all thanks to the massive amount of fanart and doujinshi depicting her and much younger Admirals.
** Western fans, both those who actually play and those who only know about the fanon, have rapidly taken to being called "[[SelfDeprecation boat]][[InsultBackfire fuckers]]", due in no small part to the abundance of {{Moe}} characters and the existence of the marriage mechanic.
** Mutsu earned the [[FailOSuckyName unfortunate nicknames]] of Mutslug, Mutsnail and [[{{Pun}} Snail Boat]]; native speakers call her [[SdrawkcabName Rimutsutaka]][[note]]from ''katatsumuri'' (snail)[[/note]] in the same vein. This is due to her horn-like radio antennae bearing a strong resemblance to a snail or slug's eye stalks. Despite having a similarly designed headdress, Nagato is spared from this nickname due to hers being back-swept.
** Some fans call Fubuki "Whobuki" to jokingly refer to how she is a relative unknown in the game, despite being one of the starting ships, so when somebody mentions her, they ask "Who?"
** Light Cruiser Demon, due to her resembling both Naka and Agano, is known as "Nagano" or "Nakano".
** Recently the term "Flight Deck Chest" (Coined via Ooi's derisive remark towards [[ACupAngst Zuikaku]] in the anime) have started making rounds in the {{ImageBoard}}s, describing Standard Carrier Fleet girls, ampnd a few Light Carrier ones, with [[{{Pettanko}} roughly flat chests.]]
* HeyItsThatVoice: All ship girls are voiced by well known voice actresses from the anime industry, including but not limited to:
** Creator/AyaneSakura (Shimakaze, Nagato, Mutsu, Kuma, Tama, Kiso, Sendai, Jintsuu, Naka)
** Creator/SakiFujita (Akagi, Fuso, Yamashiro, Kagerou, Shiranui, Yukikaze)
** Creator/YukaOotsubo (Ise, Kitakami, Furutaka, Kako, Hiyo, Jun'yo)
** Creator/NaoTouyama (Kongou, Hiei, Haruna, Kirishima, Shikinami)
*** As a bonus, the voice used for (UK-built) Kongou is practically the same voice used for (Half-British) Karen from ''Manga/KiniroMosaic''.
** Creator/YukaIguchi (Tatsuta, Kaga, Tenryu, Tone, Chikuma, Nagara, Isuzu, Natori)
** Creator/SumireUesaka (Fubuki, Isonami, Sohryu, Hiryu, Shirayuki, Hatsuyuki, Miyuki, Murakumo)
** Creator/RinaHidaka (Mutsuki, Ryujo, Kisaragi, Satsuki, Fumizuki, Nagatsuki, Kikuzuki, Mikazuki, Mochizuki)
** Creator/MegumiNakajima (Mikuma, I-58, I-168)
** Creator/AyanaTaketatsu (Yamato)
** Creator/AyaEndo (Bismarck)
** Creator/AriOzawa (Prinz Eugen).
** Creator/YoshikoSakakibara (The Narrator in the anime adaptation)
* IronyAsSheIsCast: SumireUesaka is well known as a Russophile, yet the role of Verniy is (assumed to be) given to Aya Suzaki. If Sumire actually gets the Hibiki role, we may be showered with more GratuitousRussian lines, and that may end up as a sweet reward to her fans for putting hard work in leveling her up to 70.
** The official 4koma has Fubuki (whom Sumire Uesaka voiced) communicating with the suddenly converted Verniy (Hibiki's second remodel) with (supposedly) good Russian, only to reveal that Verniy cannot really speak Russian apart from rudimentary words.
* NamesTheSame: Granted, they are named after the actual warships, so same names are to be expected. However, there is a special case with the upgraded Hiryuu, who shares an exact name with a spaceship from ''VideoGame/SuperRobotWarsOriginalGeneration''.
** PlayedWith in the official 4koma. One possible reason why Fubuki is able to speak fluent Russian (as mentioned in the IronyAsSheIsCast above) is because a previous incarnation of Fubuki (a Harusame-class destroyer) was active during the Russo-Japanese War.
* NoExportForYou: The only way to play the game is to register on the Japanese-language segment of the DMM website, which itself is inaccessible to non-Japanese IP addresses. This means to even ''register'' for the game, a prospective non-Japanese player will have to jump through a lot of hoops to do so (usually by using VPN), never mind getting to ''play'' the game, which then requires newly registered members to win a lottery for one of the limited slots per server. And competition is ''steep'' for server slots.
** The January 29, 2014 update was a rude awakening for many foreign players, as the most prevalent method used to play the game (the API link) no longer worked, since DMM had the game purge its API lists every 90 minutes. This meant that anyone who wanted to play via API was now essentially playing on a timer, and they had to hop on VPN to renew their API link when the time was "up". The other choices were playing on the VPN full-time, which carried its own associated risk, mainly a chance of getting banned for using a single IP (as DMM would technically see a single IP used by multiple accounts), or purchasing a private VPN to play the game on. In any case, this caused a ''lot'' of grief for non-Japanese players, causing some of them to drop the game outright rather than face the hassle of renewing every hour and a half. However, said API renewal forced a lot of players to log in simultaneously, overloading DMM's log-in servers, and essentially making the game inaccessible to everyone for hours on end. It was quietly removed in a subsequent update.
** However, API links is no longer a concern. A not-so-recent method involving cookie editing allows any foreign player to play the game properly.
** Due to the fact that Koreans hate this game, the anime series is not available on Korea[[note]]Aniplus, a Korea-based TV channel, release Kancolle anime only in Singapur and Indonesia and not in their own country.[[/note]]. It isn't available on China, Taiwan, Hong Kong and Thailand. Merchandise from this game isn't available in those countries, too.
* PromotedFanboy: Jiji, the artist for the Italian battleships, has done fanart of the game before.
* ShrugOfGod: The developers are ridiculously closed-lipped about the origins of both the player-controlled fleet girls and their opponents, the Abyssal Fleet, which leads not only to fans making their [[WildMassGuessing own theories]], but even to the '''official print spinoffs''' not agreeing on where they came from.
* SleeperHit: The game was originally meant for the very niche market of military {{otaku}}, but thanks to some {{Colbert Bump}}s from big names in the manga and anime industries (the most notable example being [[Manga/{{Hellsing}} Kohta Hirano's]] epic meltdowns about the game on Twitter) it got a lot more popular than intended.
* TalkingToHimself: With LoadsAndLoadsOfCharacters and only a limited pool of voice actresses, a lot of conversations in the anime tend to become this.
* WhatCouldHaveBeen: The temporarily playable Fleet of Fog ships. Let's just say, if the marriage(temp) system, which was confirmed for eventual implementation before the Arpeggio event started (and was eventually implemented some time after it ended), with the concept for it being leaked out some time before that, had instead been implemented before the event started...
----