Sonic the Hedgehog Chaos (1993) - MobyGames

The inhabitants of South Island are in danger! Dr. Robotnik has stolen all the Chaos Emeralds which kept the power balance. Robotnik has thrown the Emeralds in a parallel universe and is keeping the red one. Sonic and Tails must retreive all the Chaos

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Sonic the Hedgehog Chaos (1993)