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This article is about a subject in the real world.
Information in this article is about real-life people, companies, and objects, and does not relate to the in-universe Sonic series.
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The Sonic the Hedgehog 20th Anniversary was a celebration throughout 2011 of twenty years since the start of the Sonic the Hedgehog series with the release of Sonic the Hedgehog in 1991. It was preceeded by the fifteenth anniversary and followed by the twenty-fifth anniversary.

Celebration

Games

Merchandise

Comics

Albums

Miscellaneous

Gallery

Artwork

Gallery

Character Twitter icons

Gallery

Wallpapers

Gallery

Promotional

External links

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