Unparalleled series of games with Sonic! A quiet year has passed since all six Chaos Emeralds were returned to the South Island. But one day, the island was rocked by a terrible explosion. All the animals (Sonic with Tails - the red fox - Sonic's new friend - too) immediately began to look for the cause. It turns out that there is no Chaos Emerald in the Northern Cave! The fact is that if these six Emeralds are separated from each other, then there will be no balance in the world, chaos will begin! And if you do not find them, then the South Island is threatened by flooding in the ocean at the most I can not! Again, the evil doctor commits criminal deeds, and nothing and no one can stop him! Everyone except you - Sonic or Tails (you can choose who to play with). Play unconditionally!