* FanNickname: The fire tornado in Classic Crisis City that [[spoiler:[[MovingTheGoalposts drags the goal post away]]]] has been affectionately dubbed the Trollnado.
** [[spoiler:And the goalpost is called the Trollpost.]]
* FlipFlopOfGod: A [[http://www.gamespot.com/news/6314215/sonic-generations-speeding-to-3ds-pc financial report]] confirmed that it would go to the Nintendo3DS and PC... then it was disconfirmed [[http://www.n-europe.com/news.php?nid=15437 in an update]] to said paper. Only for the 3DS version to be ''[[http://blogs.sega.com/usa/2011/06/01/nintendo-3ds-two-sonics-one-epic-adventure/ reconfirmed]]'' later.
** And then the PC version was reconfirmed much later.
* HeyItsThatVoice: this is the first ''Sonic'' game to feature worldwide voice acting. Let's take a look, shall we?
** English voices (carried over from VideoGame/SonicColors and [[SonicRiders Sonic Free Riders.]])
*** [[Creator/RogerCraigSmith Sonic]] is [[VideoGame/ResidentEvil5 Chris]] [[VideoGame/MarvelVsCapcom3 Redfield]] as well as [[VideoGame/AssassinsCreedII Ezio Auditore]] and several extras from WesternAnimation/RegularShow. He's also [[Manga/{{Naruto}} Deidara]] and [[Manga/{{Bleach}} Shinji Hirako]]. And now he's ''[[VideoGame/BatmanArkhamOrigins BATMAN]].''
*** [[Creator/KateHiggins Tails]] is [[Manga/{{Naruto}} Sakura]] and [[Anime/CodeGeass C.C.]]
*** Eggman is voiced by MikePollock, who has voiced him since SonicX.
*** [[Creator/KirkThornton Shadow]] is [[VideoGame/KingdomHeartsII Saix]], [[VideoGame/TalesOfTheAbyss Jade Curtiss]], and [[Manga/{{Naruto}} Kisame]].
*** [[Creator/CindyRobinson Amy]] is [[VideoGame/MassEffect2 Diana]], [[{{Manga/Bleach}} Kukaku Shiba]], and [[Manga/{{Naruto}} Kushina]].
*** [[Creator/KarenStrassman Rouge]] is [[VideoGame/MortalKombat9 Kitana]], [[{{K-On}} Sawako]], [[VideoGame/{{Persona 4}} Nanako]], [[Manga/{{Bleach}} Momo Hinamori, and Soi Fon]].
*** In connection to [[Creator/KarenStrassman the]] [[{{K-On}} latter]], [[Creator/LauraBailey Blaze and Omochao]] are Nodoka. As well as [[Manga/YuYuHakusho Keiko Yukimura]], [[Manga/DragonBall young Trunks]], [[FruitsBasket Tohru Honda]] and [[VideoGame/StreetFighterIV Chun-Li]].
*** [[Creator/MichelleRuff Cream]] is [[VideoGame/DisgaeaHourOfDarkness Etna]], [[GurrenLagann Yoko Littner]], [[Anime/LupinIII Fujiko Mine]], and [[Manga/{{Bleach}} Rukia Kuchiki]].
*** [[Creator/QuintonFlynn Silver]] is [[VideoGame/KingdomHeartsII Axel]], [[Manga/{{Naruto}} Iruka]], and [[MetalGearSolid2 Raiden]].
*** [[Creator/TravisWillingham Knuckles]] is [[Manga/FullmetalAlchemist Roy Mustang]], [[VideoGame/StreetFighterIV Guile]], and [[OnePiece Portgas D. Ace]].
*** [[Creator/TroyBaker Espio]] is [[VideoGame/FinalFantasyXIII Snow Villiers]], [[WesternAnimation/GeneratorRex Van Kleiss]], [[Manga/FullmetalAlchemist the second Greed]], [[Manga/{{Naruto}} Pain]], [[VideoGame/BatmanArkhamCity Two-Face]], and [[VideoGame/TheLastOfUs Joel]].
*** [[Creator/KeithSilverstein Vector]] is [[Manga/{{Bleach}} Coyote Starrk]], [[{{Naruto}} Kimimaro]], [[CastlevaniaJudgment Simon Belmont]] and [[Manga/{{Monster}} JOHAN LIEBERT]]!
*** [[ColleenOShaughnessey Charmy]] is [[DigimonAdventure Sora Takenouchi]], [[Manga/{{Bleach}} Nel Tu]], and [[{{Naruto}} Ino Yamanaka]].
** Italian voices:
*** Sonic is [[Series/HowIMetYourMother Ted Mosby]] as well as [[TheOtherDarrin the second]] [[Manga/OnePiece Luffy]][[note]] For those curious, the abrupt voice change happened during the Enies Lobby arc.[[/note]]. And [[AssassinsCreed Ezio]], like English.
*** Eggman is [[Manga/DragonBall Guldo.]]
*** Knuckles is [[Manga/OnePiece Zoro.]]
*** Tails and Blaze are, respectively, [[WesternAnimation/MyLittlePonyFriendshipIsMagic Fluttershy and Spike]].
** Then for Spain, Sonic and Tails are [[TotalDramaIsland Harold and Bridgette]].
* IKnewIt[=/=]InterfaceSpoiler: People looked at the Xbox 360 Avatar rewards for beating the game and speculated that [[spoiler:Classic Eggman has a link to the Time Eater, since said Avatar parts are all patterned after Classic Eggman. They were right.]]
* MeaningfulReleaseDate: The first demo was made available on June 23, 2011, exactly 20 years after the first ''Sonic the Hedgehog'' was released. This is fitting, as it's a game about Sonic's history.
** The second demo was released on October 19, 2011. When Sonic Generations was one of the Daily Deals for the {{Steam}} 2012 Summer Sale, it was discounted to $10.19.
* NoExportForYou: The massive [[LimitedSpecialCollectorsUltimateEdition collector's edition]] set is exclusive to Europe and Australia.
** And it was later revealed that [[http://www.sonicstadium.org/2011/11/japan-sonic-generations-20th-anniversary-set-revealed/ Japan]] was getting an exclusive special 20th Anniversary set as well. 'Tis a sad year to be an American Sonic Fan...
* TalkingToHimself: Quite literally with Classic and Modern Tails, who are both voiced by Creator/KateHiggins. Averted in the Japanese version, where Classic Tails is voiced by Takuto Yoshinaga, while Creator/RyoHirohashi voices Modern Tails.
** And [[spoiler:[[MikePollock both Eggmen]]]].
* UrbanLegendOfZelda: For a brief while, it was rumored that Classic Sonic is mute largely because they couldn't get [[MythologyGag Jaleel]] [[TheAdventuresOfSonicTheHedgehog White]] to return to do his voice. [[http://www.tssznews.com/2011/10/10/white-i-wasnt-approached-by-sega-to-voice-generationss-classic-sonic/ It turns out that White was never approached by SEGA to voice Classic Sonic.]]
** There was also a rumour of DLC stages being released. Apart from the Casino Night pinball minigame this was false.
* WhatCouldHaveBeen: According to WordOfGod, they had hoped to make all acts playable by Classic and Modern Sonic alike. Indeed, it is possible to hack or glitch the game so that you can play Modern Sonic in Classic levels, viewed from a 3D perspective -- the Classic levels look very unfinished when viewed in this way, however. The game reportedly crashes in various ways when attempting these hacks: e.g. when Classic Sonic triggers a rainbow loop, or when Modern Sonic doesn't stop after the Classic Finish Panel and falls through the level geometry... [[spoiler:You can, at least, unlock the Modern Sonic homing attack, -la-Sonic 4, for Classic Sonic, after collecting enough red rings in the Modern Era Act 1 levels...]]
** Big's voice actor KyleHebert recorded lines of dialogue for Big's part of the game, but Big was later scrapped from the game's plot and levels. It's currently unknown where in the game he would've been, but Hebert's name remains in the credits, and Big's statue can be seen in the Statue Room.
* WordOfGod: Confirmed ''VideoGame/SonicHeroes'' was in the [[SegaDreamcast Dreamcast]] era.
** That's only going by the [=PS360/PC=] version of the game (''Heroes'' is considered to be part of the Modern era in the 3DS version) and purely for pragmatic reasons (so that there'd be an even number of stages per era), though.
*** To clarify, while the PS360 version of the game has Seaside Hill to represent VideoGame/SonicHeroes, the 3DS version uses a boss instead, the Egg Emperor, that serves as a boss for the Modern Era.

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