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31 Sonic The Hedgehog 2 Movie Easter Eggs And References You May Have Missed - GameSpot

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Celebrate Sonic's 32nd Birthday With Phantasy Star Online 2 New Genesis – Sonic City

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The making of Sonic the Hedgehog

Sonic the Hedgehog 2 – Delisted Games

How 'Sonic the Hedgehog' Marketing Went From False Start to Reboot – The Hollywood Reporter