Not too many people know how. So I'm goning to show you.

To become super sonic, you first get all red rings, then go to the sonic simulator. When you complete 3 acts of a "zone" you get a chaos emerald. Do all 7 zones, you get all chaos emeralds. And like every single other sonic media you can become super sonic with 50 rings.

Your going to have to find out how to get all the red rings, though. So try looking it up on youtube. Here is one for the first zone. This guy makes it for everything.