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According to producer Shun Nakamura, the events of the DLC stage "Tokyo" (which sees Shadow being briefly sent to the reality of Paramount's "Sonic the Hedgehog" film series and inhabiting his counterpart's body) are meant to be treated as bonus content rather than being part of the game's main story or tied directly into the film series.
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After finishing the Chaos Island acts, one of the things Big the Cat will say to Shadow when talking to him in the overworld is that he had been on the ARK and that Shadow passed by him a few times while searching for Froggy, referencing the many cameos that he had in Sonic Adventure 2.
Big mentioning having been to the Space Colony ARK:
https://www.youtube.com/watch?v=Mz5WyDCOR30#t=12m30s
Big cameos in Sonic Adventure 2 (ARK levels in particular at 5:55, 10:15, 12:48, and some of the cutscenes):
https://www.youtube.com/watch?v=sRXQzJXH228
https://www.youtube.com/watch?v=Mz5WyDCOR30#t=12m30s
Big cameos in Sonic Adventure 2 (ARK levels in particular at 5:55, 10:15, 12:48, and some of the cutscenes):
https://www.youtube.com/watch?v=sRXQzJXH228
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Video explaining Terios:
https://www.youtube.com/watch?v=ZTF8SgV0Tws
Costume in Sonic X Shadow Generations:
https://www.youtube.com/watch?v=UJJ_WfDO9vk
Definition of where the name originates:
https://www.rep.routledge.com/articles/thematic/telos/v-1
https://www.youtube.com/watch?v=ZTF8SgV0Tws
Costume in Sonic X Shadow Generations:
https://www.youtube.com/watch?v=UJJ_WfDO9vk
Definition of where the name originates:
https://www.rep.routledge.com/articles/thematic/telos/v-1
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Sonic X Shadow Generations' title was leaked a day prior to its reveal by notable leakers and a URL registration. Following the leaks, some fans and gaming news websites jokingly noted that the term "Sonic X Shadow" had previously also been used on the internet since the 2000s to refer to fan art, fan-fiction and slash fiction depicting the hedgehogs as a romantic couple.
subdirectory_arrow_right Sonic Generations (Game)
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After defeating the final boss, Modern Tails & Classic Tails are briefly seen discussing something at Sonic's birthday party during the game's last cutscene. What they are talking about differs between the English and Japanese localizations of the original game.
In the English version, they said:
Classic Tails: He collects how many? Wow, where does somebody put all those gold rings?
Modern Tails: You know what? I don't know. I keep forgetting to ask.
In the Japanese version, they said:
Classic Tails: You added legs to the plane? What have you done to Sonic's Tornado?
Modern Tails: Yeah... I guess really did go overboard with the legs...
In Sonic X Shadow Generations, the English version of this cutscene was completely re-recorded by the original voice cast, where they now say:
Classic Tails: So I have a question for you. Once we're home, you think the timeline will be restored?
Modern Tails: Yep! Just... don't think about it too hard.
In the English version, they said:
Classic Tails: He collects how many? Wow, where does somebody put all those gold rings?
Modern Tails: You know what? I don't know. I keep forgetting to ask.
In the Japanese version, they said:
Classic Tails: You added legs to the plane? What have you done to Sonic's Tornado?
Modern Tails: Yeah... I guess really did go overboard with the legs...
In Sonic X Shadow Generations, the English version of this cutscene was completely re-recorded by the original voice cast, where they now say:
Classic Tails: So I have a question for you. Once we're home, you think the timeline will be restored?
Modern Tails: Yep! Just... don't think about it too hard.
Archived VGFacts forum thread:
https://archive.vgfacts.com/thread-2685-post-79487.html#pid79487
Sonic Generations English version:
https://www.youtube.com/watch?v=DmE5DY7iNCw#t=2732s
Sonic Generations Japanese version:
https://www.youtube.com/watch?v=JuOZ62XmQww#t=1230s
Sonic X Shadow Generations English version cutscene comparison:
https://www.youtube.com/watch?v=PxOeOpcGLAA#t=1845s
https://archive.vgfacts.com/thread-2685-post-79487.html#pid79487
Sonic Generations English version:
https://www.youtube.com/watch?v=DmE5DY7iNCw#t=2732s
Sonic Generations Japanese version:
https://www.youtube.com/watch?v=JuOZ62XmQww#t=1230s
Sonic X Shadow Generations English version cutscene comparison:
https://www.youtube.com/watch?v=PxOeOpcGLAA#t=1845s
subdirectory_arrow_right Sonic Generations (Game)
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After finishing Green Hill Zone as modern Sonic in the original game, Sonic will mention to Tails that the area seems awfully familiar, with Tails saying "not to me." Green Hill Zone was from Sonic 1, while Tails didn't come into the series until Sonic 2, meaning Tails would have no memory of the area. In Sonic X Shadow Generations, this cutscene was completely re-recorded by the original voice cast to removed this reference by having both Sonic and Tails be familiar with Green Hill Zone and mentioning South Island, the main setting of Sonic 1.
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