- Bad Export for You: 3. Not necessarily because of the inflated difficulty itself, but because the lowest difficulty setting in the overseas versions, Easy, includes Easy-Mode Mockery 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' Easier Than Easy difficulty, is removed altogether.
- Divorced Installment: There was going to be a Streets of Rage 4 on the Sega Saturn, but it was turned into the unrelated game Fighting Force, and instead released on the PlayStation and 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.
- Fan Translation: Of the Japanese version of 3, courtesy of Twilight Translations. It exists because of the difficulty changes mentioned above, the radically-altered storyline in the overseas versions, and the mysterious Palette Swapping of the player characters.
- Name's the Same: Souther, the second boss from the first game, is not the guy from Fist of the North Star.
- Shown Their Work: Skate's special move is an actual breakdancing move called the power windmill.
- Urban Legend of Zelda: There was a rumor that locking Streets of Rage onto Sonic & Knuckles would allow you to play as Knuckles in SOR1.
- What Could Have Been: Pre-release screenshots show that Streets of Rage 3 was originally going to feature a section where the heroes ride motorcycles.
- Amongst other things, it appeared that Adam and Axel were originally called "Wolf" and "Hawk" respectively.
- There was a comic book based on the second game written by Mark Millar.