While the deadline to have purchased and connected your Nintendo 3DS to the eShop has long since passed, potential 3DS Ambassadors never actually received any notification that they managed to be registered as such. These early adopters were sitting relatively blind, hoping that their 3DS was registered without a hitch and that they would be eligible for 20 free games.
Well you won’t have to be blind any longer because Nintendo has recently launched a tool that they are calling the Nintendo 3DS Ambassador Eligibility checker. Users will need to type in the serial code on the back of their Nintendo 3DS into the required field on the website and then push enter. The checker will then verify whether or not you are a currently registered Ambassador. You can find Nintendo’s 3DS Ambassador Eligibility checker here.