* NoExportForYou: The game only received a very limited overseas release prior to its port in ''[[CompilationRerelease Sonic Gems Collection]]''. This changed though after [=Model2=] Collection's re-release on XboxLiveArcade and {{PlayStation Network}}.
* WhatCouldHaveBeen: There is a scrapped character called [[GuestFighter Honey the Cat]] (an anthropomorphismic version of Honey/Candy from ''VideoGame/FightingVipers'') that [[DummiedOut can be found within the game's code]]. Also, ''Sonic the Fighters'' was originally meant to have a port for the SegaSaturn, but it was scrapped. Oh, and also Rocket Metal Sonic seen in the opening was supposed to be playable.
** This was later changed, as the Xbox LIVE Arcade and [=PlayStation Network=] re-release of the game features Metal Sonic, Dr. Eggman in his [[PoweredArmor mecha-armor]], and Honey the Cat as officially playable characters without the need of hacking. However, the other dummied out characters like Rocket Metal Sonic unfortunately remain unplayable.
* This game is the second of two Classic Sonic appearances that Espio the Chameleon makes. His only other appearance was in ''VideoGame/KnucklesChaotix''. Curiously, the other Chaotix members are completely absent.
** The Japanese manual for ''Chaotix'' makes it clear that all the characters had their own individual agenda for going to the island, and thus not really a team. In light of that, it makes more sense that they'd act of their own accord afterwards.
*** That was, however, {{retcon}}ned by '''VideoGame/SonicHeroes''.
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