SEGA has finally come out and confirmed what we've known for a while now: Sonic Generations is coming to 3DS, and it'll be out in November.

The publisher also confirmed new details of the game, which it says will be set across "three defining eras" from the hedgehog's history, with all-new levels exclusively for 3DS. Staple element of the series, the Special Stage, will also return, allowing players to "become even more immersed in Sonic's world".

SEGA is also set to include a two-player mode as well as the ability to exchange data via StreetPass, opening up unlockable content along the way.

Sonic Generations is out on 3DS this November. We'll be going hands-on with the game at SEGA's E3 booth next week, so stay tuned for the first hands-on impressions.

We’re excited to confirm that Sonic Generations will be released on the Nintendo 3DS in November 2011! Set across three defining eras from Sonic the Hedgehog’s twenty year history, Sonic Generations for Nintendo 3DS will see SEGA’s mascot speeding through new stereoscopic 3D levels designed exclusively for the handheld console.

“Sonic Generations for Nintendo 3DS will combine brand new technology and twenty years of Sonic the Hedgehog videogame heritage” commented David Corless, Global Brand Director for Sonic. “Couple this with the ability to play as both Classic and Modern Sonic and you have the perfect gaming celebration for the landmark anniversary of our much loved mascot”

The specifically designed Nintendo 3DS environments, based on iconic levels from popular Sonic the Hedgehog titles, will include an exclusive unlockable ‘Special Stage’ allowing players to become even more immersed in Sonic’s world. Sonic Generations for Nintendo 3DS will also take advantage of the StreetPass™ feature by enabling players to collect new content and unlock bonus material each time they pass another player. In addition to this, the new two-player versus mode means fans can battle it out across some of the most recognizable Sonic environments in a completely new way.

Sonic Generations for Nintendo 3DS follows the same storyline as the previously announced platforms, with Sonic and his friends pulled back through time due to a mysterious new power which is causing chaos throughout the universe by creating strange “time holes”. Sonic Generations will be available for the Xbox 360, PlayStation 3, Nintendo 3DS in November 2011.