Make sure to enter the eShop to be able to take part in the program.
The deadline to apply for the Nintendo 3DS Ambassador Program is fast approaching. If you have not taken your 3DS online and gone into the eShop before 11:59 p.m. Eastern time on August 11, you will not be able to download the 20 free games when they become available.
There will be 10 NES games available on September 1, and 10 Game Boy Advance games available by the end of the year.