* ActingForTwo:
** Mario, Luigi, Wario, and Waluigi are voiced by Creator/CharlesMartinet.
** Kirby and Ness are voiced by Creator/MakikoOhmoto.
** Zero Suit Samus and Krystal are voiced by Alésia Glidewell.
** In ''1'', Naruto and the Announcer are voiced by Creator/KiraBuckland.
** Lucario and Goku are voiced by Creator/SeanSchemmel. This was even lampshaded in Lucario's reveal trailer.
* ApprovalOfGod: While not acknowledged by any content owners such as Nintendo, the game was in part made for the competitive ''Super Smash Bros.'' crowd, and several influential members have accepted it. Hungrybox in particular is one of the game's most prominent supporters, even wearing a sticker with the game's logo while competing in APEX 2013.
* ChristmasRushed: The demand for v0.9a and v0.9b to be released immediately after APEX 2013 and 2014 respectively led to those demos being released without Smash Balls for the former and Poké Balls or Assist Trophies for the latter. However, this is actively {{defied|Trope}} with β, which the dev team has resolved to not release until they are absolutely positive it is ready – the build presented at APEX 2015, while fully functional, was implied to not even be halfway done, and fans [[WhyFandomCantHaveNiceThings grating at the devs to release it then and there]] were noticeably scarce that year.
* CowboyBebopAtHisComputer: Shortly before the release of v0.9b, a number of news articles started giving out some hilariously inaccurate details. Polygon spelled [=McLeodGaming=] as "[[RougeAnglesOfSatin Macleod Games]]," and one Spanish-language news article claimed that the game was a one-man project, and another claimed that not only was it "back" after eight years[[note]]While that was how long it was in development at the time, the article seemed to imply it was on hiatus that entire time.[[/note]] but that [[Franchise/SonicTheHedgehog Shadow]] and [[Franchise/StreetFighter Ryu]] were playable.[[note]]Clearly getting confused with ''VideoGame/SuperSmashBrosCrusade'', where they both actually ''are'' playable. [[HilariousInHindsight Ryu wouldn't be revealed to be playable for five years.]][[/note]]
* CrossdressingVoices: In addition to the canonical actresses for some of the male characters...
** Naruto was voiced by Creator/KiraBuckland in ''1''.
** Isaac is voiced by Darcy Maguire-Wheelahan, a female friend of one of the devs.
* DemandOverload: ''Super Smash Flash 2'' has suffered from this on numerous occasions on every major demo release stretching back to at least v0.7. The fact that it's prone to ScheduleSlip anyway doesn't help.
* DevelopmentHell: This game's TroubledProduction proves that the concept is relative. The game was considered to be in Development Hell during the v0.5 era, when as before demos were only a few months apart, there began to be year-long gaps between releases. Of course, that wait is laughable now considering the sheer amount of content added in each later release. At least a year-long wait is expected, and the fanbase has no qualms about waiting for longer periods as each version piles more onto itself.
* DoingItForTheArt: ''Super Smash Flash'' and early versions of ''2'' were just a hobby for some college buddies, but soon, ''2'' became determined to become a full, quality video game. The devs work on it close to nonstop, leaving very little free time for themselves, and... oh yeah, since it's a FanWork, they're legally forbidden to make any profit on it. They're doing all this for free just because they wanted to make their own full-fledged take on ''Super Smash Bros''.
** In an interview during Apex 2014, Cleod explained that he has always been interested in pushing a given medium to its absolute limits, starting from when he made games for the TI-83 calculator in the early 2000s[[note]]which have been archived [[http://www.ticalc.org/archives/files/authors/70/7064.html here]][[/note]]. This is why he enjoys working in UsefulNotes/AdobeFlash even with such an ambitious project - simply because everyone sees it as a horde of crap that's apparently incapable of anything serious.
* DuelingGames:
** ''Super Smash Flash 2'' and ''VideoGame/SuperSmashBrosCrusade''. Both are vying for the title of Best ''Smash'' Fangame, and time will tell which one is better. The developers of both games have tried to avert this, saying that the games should be treated as separate games with separate goals that should not be compared.
** After being MisBlamed for the latter's absence at APEX 2015, the ''Super Smash Flash 2'' fandom and the ''VideoGame/ProjectM'' fandom have started to butt heads.
* DummiedOut: Remnants of the data for Bowser, Marth and Mr. Game & Watch were discovered a version before their respective characters were released in ''Super Smash Flash 2'', implying that they might have been intended to be added sooner.
* ExiledFromContinuity:
** Additional anime characters that were previously planned to appear in ''2'' ([[Manga/{{Bleach}} Renji]], [[Manga/DragonBall Vegeta]], [[Manga/{{Naruto}} Sasuke, and Rock Lee]]) will not be appearing due to the changing attitudes towards their inclusion.[[note]]Rock Lee was unpopular enough to be removed several years before the Retool.[[/note]] Naruto, Goku and Ichigo only got to stay because [[GrandfatherClause they'd already been programmed in]], and the devs have been trying their best to make them fit in a ''Super Smash Bros.'' setting.
** Even if the retool hadn't happened, Cleod fell out of touch with the creators of the original characters Blade, Blue, Spikeman, Azrael, and Robo Ninja, so they wouldn't have been able to be added [[TheScrappy even if they were still wanted]].
* FanworkBan: There's a strict "no modding" rule, and for good reason -- there are a large number of actively hostile {{Fan Hater}}s even within its own forums who would gladly fill it with viruses in disguise or [[{{Griefer}} disable all of their own hitboxes in online multiplayer]].
* NoDubForYou:
** In ''2'', Marth speaks in Japanese, since he uses voice clips from ''Brawl'', from when all of his [[MarthDebutedInSmashBros games were Japan only.]]
** The anime characters all use Japanese voice clips instead of English clips, except for Goku. Unlike Marth, this was a stylistic choice.
* TheOtherDarrin:
** In ''1'', Naruto and Inuyasha were voiced by Creator/KiraBuckland (credited as Kagome in the game for this role and being the announcer) and Eric Desrosiers (developer) respectively, rather than using anime or video game clips of these characters. Meanwhile, Shadow, Cloud Strife and Crono used Fox's, Giant Marth's and Roy's voice clips respectively.
** Kira Buckland was replaced by Joshua Tomar as the announcer for the second game. Doubles as a GenderFlip because the second game's announcer is male.
** Isaac is voiced by Darcy Maguire-Wheelahan, rather than reusing Teiya Ichiryūsai's voice clips for Isaac's appearances in the ''Smash'' games.
* TheOtherMarty: In ''2'', Tails was initially voiced by Mary Bruhand. For v0.9a, Bruhand's clips were replaced by Tails' voice clips from the ''Sonic'' series proper.
* OvertookTheManga:
** Played straight in the earliest demos of ''2'', which were made after ''Brawl'' was '''announced''', but before it was '''released'''; back then, Smash Balls had to be picked up off the ground and used by pressing all buttons at once, as the behavior and input were not yet known.
** {{Inverted|Trope}} since v0.9a, once the official fourth ''Smash'' game was announced. Players [[DamnYouMuscleMemory have trouble switching between]] Mega Man in ''Flash 2'' and ''3DS/Wii U''.
* PermanentPlaceholder: Blade, the first character coded into ''1'', was originally intended to be DummiedOut as just a test character. But, he ended up in the final product along with his counterpart, Blue.
* ScheduleSlip: The reason the team no longer sets any release dates, not that it stops some from asking.
-->''"We're a team made up entirely of [[DoingItForTheArt freelance non-profit non-professional]] developers who can only spend so much time on this project. This project is but another responsibility next to our other stuff such as education, work, families, [[BreadEggsMilkSquick superhero alter-ego's]] etc. etc. We can't spend as much time on this game as we'd like to, and we work with a relatively small team, meaning that even a single member being unable to work due to other stuff has a huge impact. This all makes it very difficult to set exact release dates, and we don't want to post a date out of the blue only to disappoint later."''
--->--'''Steven''', ''Super Smash Flash 2'' developer
* TroubledProduction: ''2'' was originally intended for release, with a 45-character roster, a full story mode, and DownloadableContent, by Summer ''2008''. Had the game stuck to ''Super Smash Flash''[='=]s formula, this would have been accomplished. However, as the game [[GrowingTheBeard grew more and more complex]], Cleod found that adding a new character became ''exponentially'' harder at around v0.4, and as a result, it is still in active production over a decade later.
* VideoGameLongRunners: The series released their first game in August 2006, and the second game has been getting updates since its first release in December 2007.
* WhatCouldHaveBeen: Many things about [[EarlyInstallmentWeirdness the game's history]] are still scattered around, but don't count on them showing up.
** The old roster in its entirety, and most of their sprites, can be viewed [[https://web.archive.org/web/20090203184925/http://mcleodgaming.com/ssf2sprites/index.php here]].
** Among other things, removed stages include the two Test Stages[[note]]White with a green floor, simple and MS-Painted. Stage 1 was perfectly flat and Stage 2 had a curvy terrain.[[/note]], ''Brawl''[='=]s Battlefield and Final Destination[[note]]Replaced in v0.9b and β respectively with an [[OriginalGeneration original design]][[/note]], ''Brawl''[='=]s Wi-Fi Waiting Room[[note]]Deemed redundant due to having an identical layout to both Final Destination and Hazard Switch 3DS, eventually replaced by [=SSF2=]'s own Waiting Room[[/note]], the [[VideoGame/TheLegendOfZeldaOcarinaOfTime Temple of Time]][[note]]Deemed redundant due to [[VideoGame/FinalFantasyI Chaos Shrine]] having a near-identical layout; replaced by [[VideoGame/TheLegendOfZeldaMajorasMask Clock Town]][[/note]], and [[VideoGame/SuperMarioGalaxy Comet Observatory]][[note]]originally the central hub for Galaxy Tours, was replaced by [[VideoGame/SuperMarioGalaxy2 Starship Mario]] due to having a frustrating layout[[/note]].
** Characters used to have individual revival platforms to appear on whenever they lost a life. It was later deemed to have looked good on paper but not in practice, and replaced by a universal one like in the official ''Smash'' games.
** The old Dojos are a gold mine of old information, a lot of which looks just plain ridiculous now:
*** [[http://mcleodgaming.wikia.com/wiki/Smash_Flash_DOJO!!/Update_gallery Second Dojo update archive on the Wiki]]
** Wario was planned for the first game, but ended up being scrapped. He was one of the new characters in the second game, following his appearance in ''Brawl''. There are remnants of his planned appearance, like the Floating Islands Stage, which had sprites and enemies from the ''VideoGame/WarioLand'' games.
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