Sega has unveiled a brand new instalment in the Sonic the Hedgehog series for download via WiiWare.

Previously teased as Project Needlemouse, Sonic the Hedgehog 4: Episode 1 is promising to deliver the traditional 2D side-scrolling that fans have been waiting for ever since Sonic entered the 3rd dimension.

Sonic the Hedgehog 4: Episode 1 looks set to provide familiar gameplay to fans of the series, with the return of classic moves such as the Spin Dash and Homing Attack. Fans can also look forward to playing through a variety of Zones, all inspired by the original 2D Sonic games.

Sonic the Hedgehog 4: Episode 1 is currently slated for release in Winter 2010 and will be available through WiiWare.