!!The original games:
* BadExportForYou: ''3''. Not necessarily because of the [[DifficultyByRegion inflated difficulty]] itself, but because the lowest difficulty setting in the overseas versions, Easy, includes EasyModeMockery that cuts out the last two stages of the game, while the Japanese version's equivalent difficulty level, Normal, lets you play to the very end. In other words, you're punished for playing a non-Japanese version. Also, the Japanese version's Easy difficulty, which ''still'' lets you complete the entire game and would've been the overseas versions' EasierThanEasy difficulty, is removed altogether.
* DivorcedInstallment: There was going to be a ''Streets of Rage 4'' on the UsefulNotes/SegaSaturn, but it was turned into the unrelated game ''Fighting Force'', and instead released on the UsefulNotes/PlayStation and UsefulNotes/{{Nintendo 64}}.
** The first game started its development as a spinoff of ''ESWAT: City Under Siege'' originally given the development title of ''DSWAT''. This explains the appearance of the police car from ''ESWAT'' when using the game's special move.
* FanTranslation: Of the Japanese version of ''3'', [[http://www.romhacking.net/translations/1375/ courtesy of Twilight Translations]]. It exists because of the difficulty changes mentioned above, the [[CutAndPasteTranslation radically-altered storyline]] in the overseas versions, and the mysterious {{Palette Swap}}ping of the player characters.
* NamesTheSame: Souther, the second boss from the first game, is not the guy from ''Manga/FistOfTheNorthStar''.
* ShownTheirWork: Skate's special move is an actual breakdancing move called the power windmill.
* UrbanLegendOfZelda: There was a rumor that locking ''Streets of Rage'' onto [[Sonic3AndKnuckles Sonic & Knuckles]] would allow you to play as Knuckles in ''[=SOR1=]''.
* WhatCouldHaveBeen: Pre-release screenshots show that ''Streets of Rage 3'' was originally going to feature a section where the heroes ride motorcycles.
** [[http://www.soronline.net/sor1_beta.htm Amongst other things]], it appeared that Adam and Axel were originally called "Wolf" and "Hawk" respectively.

!!The fan remake:
* AscendedFanon: Prior to the release of version 5.0 of the remake, it was very common for newcomers on Bombergames' forums to ask for its release date, to the annoyance of every regular. One such lucky user was teased with an animated GIF of one of the basic enemies, its name the same as the user in question's forum handle, getting sent flying ''VideoGame/SuperSmashBros'' style into the ocean by Blaze and the massive medieval Banhammer she was wielding. The image was enough of a hit to warrant a special playable event in its honor once 5.0 came out, sans the name of the user that spawned it.
* FanworkBan: Sega didn't take kindly to it and threatened to sue the developers if they didn't remove it from their site.
* KeepCirculatingTheTapes: Like many other fan projects that were axed by the copyright holders but had reached a complete release, you'll be sure to find ''Streets of Rage Remake V5'' around the net years from now. Quite a few people, due to the timing of the C&D order, believe this may have actually been Sega's intention all along; give the game time to circulate, then send the C&D to keep their shareholders happy. Not to mention the order generated plenty of publicity, making many aware that the remake existed to begin with.
* WhatCouldHaveBeen:
** According to reports (like [[http://soronline.net/forum/viewtopic.php?f=4&t=9&start=200&sid=b7be44e3f1db2ed96576cc439d06f34e&view=print here]] for example), Rudra was originally conceived as an April Fool's joke wherein someone designed her and placed her on the SOR forums, touting her as Shiva's sister--except, a lot of fans didn't get the joke and thought she really existed. From that point she was drafted into the remake with intentions of actually making her and Shiva siblings, before the development team changed their minds and took her in a completely different direction, resulting in the Rudra we know from the fan-game's final draft.
** Version 4 of the remake had Super Shiva, an [[NintendoHard incredibly difficult final boss]] that was on a strict time limit. Not only was Super Shiva the toughest enemy in the whole game, but you'd automatically got a bad ending if the time ran out, which caused the entire level to self destruct. The developers kept the time limit final boss idea intact, but it was used only for one of the paths in the game rather than the only path and Super Shiva was cut.
** During development of the remake, developers toyed around with the idea of allowing the game to be played online. However, the team simply couldn't get a proper net code implemented on time when version 5 was close to release, so they decided to make the game local play only.

* There was a comic book based on the second game written by Mark Millar.