Today Nintendo announced the extension of their 3DS XL promotion until April 30th.
Nintendo is offering a special promotion for people who buy both a Nintendo 3DS XL system and either Luigi’s Mansion: Dark Moon or Pokémon Mystery Dungeon: Gates to Infinity. Anyone who registers a Nintendo 3DS XL system and either Pokémon Mystery Dungeon: Gates to Infinity or Luigi’s Mansion: Dark Moon with Club Nintendo between March 21 and April 30 will receive a code to download one of five Nintendo 3DS games for free: Super Mario 3D Land, Professor Layton and the Miracle Mask,Art Academy: Lessons for Everyone!, Star Fox 64 3D or Freakyforms Deluxe: Your Creations, Alive!
More info about this promotion can be found here at Nintendo.com.