This time Sonic and his friend should save the Earth from Dr. Eggmans presence as he is going to tear it apart using Chaos Emeralds. Stop him before it's too late and free your friends while you proceed.
This is the first Sonic game where you have a partner and he follows you throughout the levels. You can play with your friend in a pair or let the computer do the job. You can perform super combos using two players and when you save your friends you can ask them to help you. Reach Dr. Eggman and stop him before he make his evil plans come true!