Nintendo U.K. is running a promotion for a limited time where those who register their Nintendo Network ID on a 3DS, or link the Nintendo Network ID they currently use on their Wii U to the handheld device, will receive a download code for Super Mario Bros. Deluxe.
Until Jan. 31, 2014, to quality for the promotion, users will have perform the latest system update on their 3DS handheld console. They will then have to either register a new Nintendo Network ID to the 3DS, or link an existing Network ID from the Wii U. Those who performed these actions after Dec. 10 will already count for the promotion. Download codes will then be sent to users between Feb. 13-28, 2014 to the email address registered to their Nintendo Network ID.
Super Mario Bros. Deluxe is the Game Boy Color version of the original Super Mario Bros. game. The game is available via Virtual Console for the 3DS.
We have reached out to Nintendo to find out if there are plans to extend the promotion to those outside of the U.K.