SEGA kicks off a familiar marketing campaign.

SEGA thanks fans by releasing two unseen sketches from Naoto Oshima and Yuji Uekawa.

SEGA dishes out more artwork for Mario & Sonic at the London 2012 Olympic Games.

Check out new artwork for Sonic Generations’ various bosses.

See more of Sky Sanctuary and Emerald Coast, as well as some new artwork for Silver the Hedgehog and Time Eater.

SEGA officially reveals Shadow the Hedgehog as a rival in Sonic Generations.

SEGA officially unveils Chemical Plant Zone, the Classic Metal Sonic Rival Battle at Stardust Speedway for the Xbox 360/PS3 version of Sonic Generations, boxart for Sonic Generations 3DS and Classic and Modern Tails art. Check out all of the art and screens.

SEGA announces Sonic Generations Winter release in Japan and shares a couple of new screenshots as well as some artwork.

SEGA opens the characters section of the U.S./EU Sonic Free Riders official website, revealing new art, profiles and music.