As things become more desperate, Sonic realizes that the one thing that could turn the tide is the Master Emerald. Following the events of Sonic the Hedgehog 2, Knuckles has been keeping the ...

But, no sooner are they gone, when Dr. Robotnik comes back, this time with a new partner, Knuckles, in search for an emerald that has the power to both build and destroy civilizations. Sonic teams ...