included worldwide matchmaking, leaderboards, and tournaments. Additional features were available to friends who exchanged Friend Codes.

Friend Codes

Each game that used Nintendo Wi-Fi Connection generated a unique twelve-digit Friend Code that could be exchanged with friends and be used to maintain individual friend lists in each game. Though certain games could be played online without a Friend Code, a Friend Code was required to play with a specific person. Friend Codes were generated from an identifier unique to a copy of

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