The Nintendo 3DS Ambassador Certificate was downloadable software for the Nintendo 3DS to be used with the Nintendo 3DS Ambassador Program. It is mainly simply a virtual gold Nintendo certificate with its own background music. Notifications would also be sent regarding new content in the software, however it seems no additional plans were ever announced past the initial 10 (each) free Nintendo Entertainment System and Game Boy Advance games.
The Nintendo 3DS Ambassador Program, is a program that Nintendo launched for the Nintendo 3DS. This program was made by Nintendo in recognition of players who bought the 3DS for $249.99 before the price dropped to $169.99 on August 12, 2011.
In order to become an ambassador, players had to log on to the Nintendo eShop with their 3DS before August 12th and then update the console. The Nintendo 3DS Ambassador Program offers ten NES games for early adopters and also offers ten Game Boy Advance games starting December 16, 2011, making twenty games in total.
In addition to the twenty free games, Nintendo 3DS Ambassadors may also download a special Ambassador Certificate. The certificate has a notifications feature, which when toggled 'On' allows the player to receive special notifications exclusive to Nintendo 3DS Ambassadors.
After a system update, it is possible for players to transfer their NES and Game Boy Advance games to another Nintendo 3DS system.