I have got a lot of mixed information about this list. Here is what I am hearing so far. Sorry for the confusion.

North America

Super Mario Bros.
The Legend of Zelda
Balloon Fight
Ice Climber
Donkey Kong Jr.
Metroid
Open Tournament Golf
Wrecking Crew
Yoshi
Zelda II: The Adventure of Link

Europe

Super Mario Bros.
Donkey Kong Jr.
Balloon Fight
Ice Climber
The Legend of Zelda
Wrecking Crew
Mario Open Golf
Mario & Yoshi
Metroid
Zelda: Adventures of Link

Japan
Super Mario Bros.
Donkey Kong Jr.
Balloon Fight
Ice Climber
The Legend of Zelda
As for the rest:
Wrecking Crew
NES Open Tournament Golf
Yoshi
Metroid
Zelda II: The Adventure of Link

Japan


Super Mario Bros.
Donkey Kong Jr.
Balloon Fight
Ice Climber
The Legend of Zelda
As for the rest:
Wrecking Crew
NES Open Tournament Golf
Yoshi
Metroid
Zelda II: The Adventure of Link

The 3DS Ambassador program kicks off September 1st.

Link