Sonic Drift 2, released in Europe as Sonic Drift Racing, is a kart racing video game. In the game, Chaos Emeralds are awarded for winning races. If Sonic, Tails, Knuckles or Amy collect all 6 in the Blue GP, they will face Robotnik in a final race around the Death Egg. If Robotnik, Fang or Metal Sonic collect all six in the Blue GP, they will face Sonic in the final race. (wikipedia.org)