Nintendo of Europe is currently holding a promotional campaign where new 3DS owners can get a free downloadable copy of Super Mario 3D Land.
Starting November 27th through until January 13th, 2014, new 3DS owners must register their system at Club Nintendo, along with any of the following games listed below. Once you register it, you will receive a voucher code that you can redeem on the Nintendo eShop. You should receive the code twenty-four hours after you’ve registered the 3DS and one of the above games.
Mario & Luigi: Dream Team Bros.
Animal Crossing: New Leaf
The Legend of Zelda: A Link Between Worlds (launching November 22nd)
Donkey Kong Country Returns 3D
Fire Emblem: Awakening
Luigi’s Mansion 2
LEGO CITY® Undercover: The Chase Begins
Sonic Lost World (Nintendo 3DS version)
Monster Hunter 3 Ultimate (Nintendo 3DS version)
Pokémon X
Pokémon Y
Bravely Default (launching December 6th)
New Super Mario Bros. 2
Mario Kart 7
Professor Layton and the Azran Legacy