Sonic Lorepostingさんのイラストまとめ

Sonic 3 & Knuckles, this is Sonic 3 locked onto Sonic & Knuckles via Lock-on, as a result it grants a full experience of both games; for the first time in the series there are 2 stories in the game, Sonic's and Knuckles' where the latter occurs after Sonic's
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Sonic the Hedgehog Spinball, Eggman takes over Mt. Mobius where he turns it into a mechanical base and uses it to convert animals into badniks; after several retcons the game was finally turned canon.
#RoadtoSonicFrontiers.

Sonic the Hedgehog CD, introduces for the first time the concept of timetravel and the beloved characters such as Amy Rose and Metal Sonic; after years of decades-long struggle it has finally been established that CD is placed chronologically between S1 & S2
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SEGASonic the Hedgehog, in this game Eggman kidnaps Sonic, Mighty and Ray (where they first meet) and transports them to his trap-filled island; it has only recently been established that this game takes place sometime after the events of Sonic 3 & Knuckles.
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Sonic the Hedgehog 2 (16-bit), the first game within the popular Death Egg Saga where it marks the first meeting between Sonic and Tails and the debut of Super Sonic; from here on there will be 7 Chaos Emeralds in the mainline games.
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Sonic the Hedgehog 2 (8-bit), released earlier than the 16-bit version, this version also has a different storyline where Tails is kidnapped by Eggman and Sonic will have to revisit South Island to rescue him, also this game is famous for its bad ending.
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Sonic the Hedgehog (16-bit), it narrates Sonic's adventure against his archenemy Eggman in an attempt to save the animals and South Island itself; recently this game has been retconned as the beginning of everything and first meeting between Sonic and Eggman
#RoadtoSonicFrontiers

8 ʏᴇᴀʀꜱ ʙᴇꜰᴏʀᴇ ᴛᴀɪʟꜱ ᴀᴅᴠᴇɴᴛᴜʀᴇ
Miles "Tails" Prower is born

7 ʏᴇᴀʀꜱ ʙᴇꜰᴏʀᴇ ꜱᴏɴɪᴄ ʀᴜꜱʜ ᴀᴅᴠᴇɴᴛᴜʀᴇ
Marine the Raccon is born

6 ʏᴇᴀʀꜱ ʙᴇꜰᴏʀᴇ ꜱᴏɴɪᴄ ᴀᴅᴠᴀɴᴄᴇ 2 ᴀɴᴅ ᴋɴᴜᴄᴋʟᴇꜱ' ᴄʜᴀᴏᴛɪx
Cream and Charmy were born