Nintendo of America has also announced the ten free Nintendo Ambassador NES games. The ten games are exactly the same as the ones Japan are getting and presumably the UK and Europe. The ten free NES games will be free to download from September 1st.
Super Mario Bros.™
Donkey Kong Jr.™
The Legend of Zelda™
NES Open Tournament Golf
Zelda II – The Adventure of Link
UPDATE: Apparently Nintendo has already put the ten free NES games for the Nintendo 3DS. All you need to do to claim your ten free NES games is scroll to your ‘Settings/Other” and then click “Titles You’ve Downloaded”. The ten free NES games will be included in that list.