- Approval of God:
- The developers frequently retweet various fanart on their respective Twitter accounts.
- Ninjamuffin has stated to be really impressed with the Friday Night Funkin': Neo Game Mod, and has also stated that he'd love to make the game's graphics look similar to the Friday Night Vibin'/RTX On mod.
- Ninjamuffin's favorite mod is Friday night funkin' but bad, which replaces the graphics with simplistic drawings and the character noises with half-hearted singing attempts using a poor microphone.
- Ascended Fanon: ninjamuffin99 jokingly claimed that Pico and the Boyfriend dated each other at one point in past and were now exes in response to seeing ship art of the two. Despite it just being that, a joke, ninjamuffin99's own stance on headcanons plus the general embracing of the concept by the developers and even Tom Fulp himself, lead many to run with the idea, so much so that ninjamuffin99 later claimed in a live stream that them being exes is in fact canon, and not just a meme anymore.
- Colbert Bump: Due to Newgrounds being relatively dormant in the 2010's, the appearance of guest characters and cameos from the site's heyday usually reignites interest in the character's source work, such as Pico or the Tankmen series. Even Spooky Month, a newer Newgrounds series with a decently sized following, gained a boost of popularity from Skid and Pump's inclusion in Week 2. This also extends to mods, with The Tricky Mod reigniting interest in Madness Combat long before Hank was added officially.
- Cross-Dressing Voices: The Girlfriend, like most of the other characters, is voiced by Kawai Sprite himself.
- Demand Overload: Week 7, featuring Newgrounds' mascot, Tankman, was initially released exclusively to the site; the influx of people from this was so large it crashed the site. After the site went back up, Friday Night Funkin's page was temporarily disabled for two days to make sure the servers would stay up due to people flocking into the same page.
- Descended Creator: The game's composer, Kawai Sprite, provides the voices (i.e. his voice is used to create the song notes) for most of the characters, the exceptions being Skid and Pump (voiced by Sr. Pelo), Mommy Mearest (voiced by Monica Franco), Monster (voiced by Bassetfilms) and Tankman (voiced by JohnnyUtah).
- Doing It for the Art: In a tweet by Ninja Muffin, he says that even if everyone stopped playing Friday Night Funkin', the team would still continue making the game.
- Fan Nickname:
- Due to the Nameless Narrative, fans were quick to come up with their own names for some of the characters. Some of the most used are "Keith" for the Boyfriend and "Luis" for Daddy Dearest.
- Fans commonly refer to Monster as "Lemon Demon"; while initially because fans thought he was a reference to the band of the same name, it stuck due to still being a very apt description.
- Fandom Life Cycle: Stage 4. Most people who have never played a rhythm game before have been introduced to the genre thanks to this game.
- In Memoriam: One of the Couch Gags is dedicated to the Newgrounds user HenryEYES, who passed away from COVID-19.
- Due to its design and style of music, many were under the impression that the Monster was an intentional reference to Lemon Demon. In a Reddit AMA, it was revealed that, while they didn't rule out potential subconscious influence, the game creators did not directly base it on the band.
- There was a slowly growing Fanon that, while The Girlfriend is a Fearless Fool, she actually gets scared by more mundane things like earth-shaking noises, from characters like Whitty from "VS Whitty" or Ruv from "Mid-Fight Masses", due to her having a Fear of Thunder. This was de-confirmed by Phantom Arcade, who stated that her and The Boyfriend's idiocy is so strong that Whitty or Ruv wouldn't scare them, only uncontrollable situations like thunderstorms or gross stuff like bugs.
- While Word of God already stated The Girlfriend is a full-blown demon like her parents, the fact she looks as human as The Boyfriend had a decent amount of fans believing otherwise, having Fanons that she might be an adopted human. All that uncertainty was completely cleared away when Week 7 came, since not only does one cutscene have her momentarily turning purple and gaining red Glowing Eyes of Doom just like her parents, the game-over screen for the third song shows that underneath her human-like appearance is a blatantly demonic skeleton with horns and fangs.
- Meme Acknowledgement:
his name isn't keith —- dumb eggy lol
- Two of the Couch Gags give shoutouts to two common fan names for the Boyfriend, though both are Jossed as official in the process:
his name isn't evan —- silly tiktok
goodbye —- my penis
- Another Couch Gag references a piece of fanart note where Daddy Dearest directs a Freudian Threat towards The Boyfriend.
- Newbie Boom: The sheer popularity of the game has led to a massive surge of new visitors and users to Newgrounds, after the site had largely been dormant for most of the mid to late 2010s, to where the reveal of week 7 ended up causing the site to outright crash and get renovated to handle the massive influx of newcomers.
- Revival by Commercialization: Parry Gripp's song "I Got No iPhone", while not obscure, was primarily known to only three groups of people (largely Millenials and early Zoomers); people who were fans of Gripp in the late 2000s-early 2010s, people who used Flipnote Hatena around the same time (due to a famous animation featuring the same song) and a few portions of the Five Nights at Freddy's fandom (thanks to an infamous animation featuring Bonnie and the song). However, Bassetfilm's cover of the song in his Monster voice, prompting numerous fanworks, brought the song significantly more attention, including introducing a lot of younger people to the song for the first time.
- Role Reprise:
- Rule 34 Creator Reactions: Upon releasing "Satin Panties" and Mommy Mearest's design as a teaser for Week 4, ninjamuffin commented that the "nsfw artists eatin good tonite". The team were very aware of the type of reception she was going to get, and her third song was even named MILF - Mom I'd Like to Fuck - as a playful reference to it.
- Schedule Slip:
- Week 5 was meant to be released alongside Week 4 during Christmas, but wasn't ready in time and was thus delayed until mid January.
- Week 6 was the next to experience a delay, albeit by only one week.
- Sleeper Hit: The game was released with little fanfare during Ludum Dare 47 and didn't even manage to make it past the top 300 in the rankings: over the course of a few weeks, it rapidly gained popularity and is now easily the most well-known game out of the entire game jam.
- Talking to Himself: The Boyfriend rapping against Daddy Dearest during Week 1, Pico during Week 3, the Girlfriend in the tutorial, and the Senpai during Week 6, as all are voiced by Kawai Sprite.
- Trolling Creator: The creators of the game have a tendency to jokingly refer to incredibly odd things as canon, such as Boyfriend being Hatsune Miku's older brother. Fans take these in stride as most are legitimately interesting concepts and make for great fanart, and the creators in turn often embrace the ideas by retweeting said fan art.
- What Could Have Been:
- Early plans for the game involved a battle system where the characters would directly interact with each other, having attack, dodge, and "get hurt" animations. They decided to stick with a more traditional Rhythm Game approach, though unused sprites for this battle system can be found in the Boyfriend's sprite sheet. The Full-Ass Game Kickstarter mentions these sprites while talking about additional mechanics, so reintroducing them in a later version isn't out of the window.
- The Girlfriend's idle animation was planned to have a part where she would swap which leg she was crossing; it got cut for time.
- While the song "Monster" was fully implemented in the Tankman update, the Monster's titular track was originally supposed to be added during the Halloween update, which introduced Week 2 where it is faced in. The reason it wound up being left Dummied Out for so long was because the creators had difficulties properly developing the animation and coding in relation to the song, which ended up taking several months before they managed to complete and add it.
- Senpai was planned to have one blue eye and one green eye as yet another reference to old school anime; due to his design, sprites, and animations being worked on by three separate people, this got lost in translation and he ended up with two blue eyes.
- The Wiki Rule: Right here.
- Word of God: As the game currently lacks cutscenes outside of Week 6 and Week 7, various story bits are instead explained by the creators.
- Pico is a hitman and was hired by Daddy Dearest to kill the Boyfriend - however, Pico has "history" with Boyfriend, and so challenges him to a rap battle instead.
- Skid and Pump fight the Boyfriend in Week 2 because Monster tricks them into bringing him the Girlfriend in exchange for candy. The events of Week 2 also happen after Week 4, and the mansion the Week takes place in belongs to Girlfriend's parents.
- The Boyfriend and the Girlfriend were sent into Senpai's game by Daddy Dearest, who was still sore about losing to Boyfriend and thus wanted to screw with him.
- The context behind Week 7 is that the Girlfriend's parents arrange a vacation for both her and her Boyfriend, but the plane is a setup to get the Boyfriend killed, only for that to ultimately fail, landing the Boyfriend and the Girlfriend in the Tankmen's Military Zone. Also, during the opening cutscene for Week 7's 3rd song, "Stress", the Girlfriend was about to use her demonic powers when the Tankmen were about to shoot her until Pico jumped in and pushed her off the speakers, right into the Boyfriend's arms.
Trivia / Friday Night Funkin'