- two SpotPass activities: exchanging profile cards and exchanging missions
- record details about how long you've been playing the Sonic series, list your favorite amongst Sonic's friends on your profile card
- card also includes your play record for the 3DS title
- exchanging the profile cards will update your game in numerous ways
- game includes 100 missions which are unlocked through SpotPass
- exchange missions to have another player appears in your SpotPass log
- select their name to receive a mission
- mission examples include Revenge, where you must defeat as a certain number of enemies as possible
- also Special Trial, where gopher-like enemies appear in Act 1 of Mushroom Hill Zone
- also unlock missions with Game Coins