Friend Code

From GamerWiki

Nintendo Wi-Fi Connection Friend Codes are automatically generated, unique identification codes, for a particular Nintendo DS and Game combination. If you purchase a Nintendo WFC-enabled game for your Nintendo DS, the instruction booklet will tell you how to generate your Friend Code, which is particular to that specific game, and your specific Nintendo DS console. Your Friend Code will not be valid on other games, or if you use your game cartridge in another Nintendo DS console.

Enter your friend codes under the Nintendo WFC Friend Code page, and swap with other GamerWiki users. You can then play together online!