It probably depends on how the developer implements it. In the case of the Wii, some games required friend's codes while others allowed random match-ups.
It's still going to use the friend code system for the 3DS. This time its only one friend code for playing instead of a new friend code for each game. This friend code is your system friend code (or gamertag ID). Just add your friends once and you can play all the games with them.
Log in to comment