There is downloadable content to the 3DS title Sonic the Hedgehog 3D. If the game has been just released, the DLC will be free. After a month later, it will be $1.99. When 2014 comes, it will be downloadable (with Sonic the Hedgehog 3D combined) for the 3DS system for 400 points.
- New Zones
- New enemies
- Knuckles as a playable character
- Debug Mode added to saved file once the player finishes the game with the super good ending.
- Super Emeralds can be collected when Chaos Emeralds are collected.
- Mushroom Hill Zone
- Flying Battery Zone
- Sandopolis Zone
- Lava Reef Zone
- Hidden Palace Zone
- Sky Sanctuary Zone
- Death Egg Zone
- Doomsday Zone (Only when collected Chaos/Super Emeralds)