This version includes:

• 6 new characters
• 21 additional maps for the two-player battle mode
• Chao Karate from Sonic Adventure™ 2: Battle

THE GAME:

In this battle between heroes and villains, will you choose to save the world or conquer it?

The search for the Chaos Emeralds is on, and battle lines have been drawn between Hero and Dark. Experience two unique adventures featuring long-time heroes and both new and classic villains as they fight for the fate of the world!

Save the day as the heroes Sonic, Tails, and Knuckles, or wreak havoc as Shadow, Dr. Eggman, and Rouge, using each character's unique abilities!

Take a break from the main story and challenge a friend in kart racing games and other competitive two-player modes!

Create your own Chao pet, improve its stats, and compete with them in unique mini-games!