History YMMV / YandereSimulator

** WHOA TECHNOLOGY! [[labelnote:Explanation]]Said by [=YandereDev=] on his mid-January 2017 video and quickly went viral through the fandom. The reason for Dev's outburst was because he was amazed that the developers of ''Metal Gear Solid 2'' took the time to program a random bucket of ice cubes to melt in real-time, with the use of the word "technology" based on [[Website/FourChan /v/]] typing it in all caps to describe DevelopersForesight moments like this. Dev has understandably gotten really sick of fans repeating this one and has been known to ban people from his Twitch streams for saying it.[[/labelnote]]

** This is especially the case with men from [[{{Imageboards}} the -chans]], a.k.a the original target demographic, whose incessant complaints eventually drove [=YandereDev=] to RageQuit [[Website/FourChan /v/]] for good.

** A new controversy arose in January 2024 when Estrine Studios, famous for dubbing ''Webcomic/LinkedUniverse'', claimed that [=YandereDev=] was a [[PaedoHunt pedophile]] while firing one of their voice actors for associating with him, saying that other voice actors voiced discomfort with working alongside the voice actor in question, and some had even left the studio in protest.[[note]](However, [[https://www.youtube.com/watch?v=lr3sI6oAYZc the video where this claim was made]] has since been marked Private.)[[/note]] This in turn caused many people to jump ship from [=YanSim=] and sever ties with Dev.

** A new controversy arose in January 2024 when Estrine Studios, famous for dubbing ''Webcomic/LinkedUniverse'', claimed that [=YandereDev=] was a [[PaedoHunt pedophile]] while firing one of their voice actors for associating with him, saying that other voice actors voiced discomfort with working alongside the voice actor in question, and some had even left the studio in protest.[[note]](However, the video where this claim was made has since been marked Private.)[[/note]] This in turn caused many people to jump ship from [=YanSim=] and sever ties with Dev.

** [=YandereDev=]'s abuse of Midori in his videos and the panty shot mechanic may come off as this after [=YandereDev=] was accused of grooming a 16 year old girl, which prompted Ayano, Senpai and Midori's VA's, among many other VA's and volunteers, to quit.

* CrackShipping: Shipping Ayano with anyone who isn't Senpai. [[SingleTargetSexuality Canonically, Ayano has eyes only for Senpai and nobody else.]]

** A new controversy arose in January 2024 when Estrine Studios, famous for dubbing ''Webcomic/LinkedUniverse'', made the claim that [=YandereDev=] was a [[PaedoHunt pedophile]] while firing one of their voice actors for associating with him, saying that other voice actors voiced discomfort with working alongside them, and some even left the studio in protest.[[note]](However, the video where this claim was made has since been marked Private)[[/note]] This in turn caused many people to jump ship from [=YanSim=] and sever ties with Dev.

* DiscreditedMeme: [=dyc3=], an amateur software engineer on [=YouTube=], did [[https://www.youtube.com/watch?v=LleJbZ3FOPU a thorough source code analysis]] of the then-latest version of the game, showing that the game's performance problems are more of an architectural and planning fumble[[note]]with [=dyc3=] noting misuse/lack of use of [[https://en.wikipedia.org/wiki/Level_of_detail level of detail]] and lots of unneeded code reuse, generally going against [[https://en.wikipedia.org/wiki/SOLID often-quoted programming principles]][[/note]] rather than the code itself as many people claimed. One of the particular goals of his video was to put the "if-else" meme, used by detractors of the game to mock it, to rest, going so far as to change every [=C#=] if-else in the source code to the related "switch" statement (usually the better option of the two conditional statements) and noted that the subsequent performance increase was negligible enough to not be noteworthy. [=YandereDev=] was impressed enough by this video that he not only showcased it on his blog, he also started working with [=dyc3=] to optimize the game, as noted by a pinned comment on the video.

** The original dozen NPC students[[note]] (Yui [red], Yuna [yellow], Koharu [green], Mei [blue], Saki [teal], and Kokona [purple] for the girls; Haruto [red], Sota [yellow], Hayato [green], Ryusei [blue], Sora [teal], and Riku [purple] for the boys)[[/note]] are often called the "Rainbow Girls/Six" and "Rainbow Boys" for obvious reasons. It has become an AscendedFanNickname as of the release of 1980s mode, as they are refered to as such in Kaguya Wakaizumi's entry in the characters page of the official website.

** Youtuber Veggie Gamer has a specific nickname for almost EVERY single character in the game, these include Trumpcackes (Musume), Cookie-kun (Shoku), Dissapointed Muffins (Ryusei)[[note]] (altough he was removed in August of 2018)[[/note]], [[WebVideo/YuGiOhTheAbridgedSeries in America]] (Seiyo) just to name a few.
** Before the Student Council President's name was revealed, some fans, based on her title and the game's penchant for {{Punny Name}}s, liked to pretend that her name is Seito[[note]] (note however that "-to" is a standard ''masculine'' name-suffix in Japan)[[/note]] Kai or some variation of the Japanese word for "Student Council".

** Mr. Jazzy Feet is God. Well, you ''do'' quite literally pray to her. [[note]]In the debug builds from July 2016 on, praying to Mr. Jazzy Feet is how you toggle the sanity-based animations, as well as do some other actions that aren't properly coded in yet. The command that automatically cleans Yan-chan up is titled "Forgive Sins".[[/note]]

** The June 2015 build introduced the ability for Yan-chan to poison a classmate's food. Kokona starts to cough, then begins to dramatically choke and roll around on the ground. ''None of the other students notice this happening about ten feet away from them'' because this mechanic hasn't been implemented into the game yet.[[note]]They'll notice once they start to head for their classes and see her corpse nearby. Or if you choose to drag the corpse towards any of them.[[/note]]

* ParanoiaFuel: Info-chan knows everything about everyone.[[note]]Well, ''almost'' everything; to learn a rival's darkest secrets, you'll have to do some work on your own.[[/note]] She spends the school day locked in a dark room, in front of a ''six-screen'' computer, with a CCTV camera rigged up right outside the door. For a very specific price, she will actively assist people who can and will harm you in various ways. It's also made abundantly clear she doesn't have the best intentions for those around her, and may be involved in many more things than we realize. Now imagine what someone with her capabilities could do in real life.

** Some people hate Osana and Kokona for being Yan-chan's rivals. Even though poor Kokona is just a ''temporary'' rival to test out mechanics.[[note]]Unless the game sells well enough to justify DLC, in which case she is one of the three prime candidates for new rivals – the others being the phantom girl and Midori.[[/note]]

** Midori Gurin. She was only created as an AudienceSurrogate for people with misguided attempts to help [=YandereDev=]. Her current implementation is to stand on the rooftop all day with no routine in sight, waiting to get killed. The WordOfSaintPaul moments of [=Mom0ki=], her voice actress, despite not being canon and borderline speculation in some cases, only makes it more heartbreaking for those willing to accept them as {{Fanon}}.[[labelnote:†]]Specifically, [=Mom0ki=] implies that the reason Midori had no routine for a long time was because she was accidentally left off the class roster, so there's no desk for her, but she's still legally enrolled at Akademi and must attend, so the roof is the only place she can go. Also, Midori considers Oka one of her best friends, but Oka can't stand her.[[/labelnote]]