Every character will present Sonic with a Chaos Emerald, transforming him into Super Sonic, who sets out to neutralize's Chaos anger and discomfort caused by Eggman. What ensues is one of the most iconic final boss fights in the Sonic series. That makes the 7th Chaos Emerald, which allows Chaos to become Perfect Chaos who decides to destroy Station Square, killing millions of people for no purpose other than giving us (the players) a very cool setting for the final battle. Immediately after entering the area Sonic and Tails will find the Emerald that they are looking for, but Chaos will come and steal it.

Afterwards, Sonic will be transported back to Mystic Ruins where you will need to go to the pyramid area. Here you will see many short cut-scenes where you will need to move Sonic closer to the shrine between each scene.

After another cut-scene Sonic will be warped to Tikal once again. Run over to the floating island near Red Mountain to find Eggman lying on the ground. There will be a long series of cut-scenes and then you will gain control of Sonic. Select it to play Super Sonic’s short adventure and see the true ending of the game. After E-102’s adventure is complete, a gold '?' will appear in the character select screen.

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