Where can you find the serial/pin number on Wii games/ the Wii consol?

Answer 1

The Pin Number on Wii games are located on some games inside the case. There should be an ad for My Nintendo registrations. On the back of that should be a code.

For the Wii itself, the serial number should be under the Wii itself.

Answer 2

Yeah, the pin number will be on the bottom if you orient it vertically, and included ALL of the numbers there (ps. a hint for the wii is get the new stronger wrist bands soon, my friend is 120 pounds max wet and it broke off in his hand while playing Wii baseball and almost trashed the TV, you can order them online)