Co-op has been a staple feature of many Sonic games for decades now. These examples are the best of the bunch.

Classic Sonic game prices are rising due to Sonic's recent popularity, especially those featuring Shadow. Copies of the original Sonic Adventure 2 and the 2002 Nintendo GameCube port are seeing ...

More important than the length is the quality, and Shadow Generations is the best Sonic game I've played in years. I'd have ...

It featured a library of games developed for the Game Gear and direct ports of Sega Master System games, such as Sonic the Hedgehog. Even though the Game Gear didn't have the staying power of ...