Hi Mateo - well, I have pm'ed you the link to the tread that lists all online games.
Here it is for anyone else who might need it:
List of Current Online Wii Games(Kept Updated)
So you can go online on Nights, Endless Ocean and Mario Kart Wii.
MK Wii is best, as you can race with friends or anyone in the world. I assume you have already set up your Mario Kart channel and started racing unknown people?
On Endless OCean you can go diving with friends. Not sure how much online activity there is on Nights.
As Ricksta7 said, add your friend codes to that thread, and start asking people to add you, so you can play together.
No point just adding us wildly - it has to be a 2-way exchange. Good luck!
