and no, u cant google the codes, the wii friend code is unique to everybody, it can be found on the same page u get messages from nintendo or friends from, if a game can b played on wi-fi it also has its own code, usually found somewhere on the first screen of that game after u connect to wi-fi
wii codes r 16 digits long mine for ex. 7705-2608-9942-3395
game codes are like wii fc in that they r unique to every1, for ex. my
SSBB fc: 5413-0764-3703
DBZ BT3: 4597-0722-7423
POKEMON BR: 2449-5771-4547
MARIO KART: 3909-8266-6724
like the wii code u can think of the game codes as a way to have a buddy list, game fc however r only 12 digits long not 16.