In something that you very rarely here. It appears that Super Smash Bros. for 3DS is sold out in Japan. The game has been out for 4 weeks now in Japan and sold 109,811 copies in it’s third week according to Media Create. While this number is way down compared to 321,363 the week before, stock shortages are the major cause for this.
Nintendo is working as fast as they can to create more copies and has sold 1.37 million copies so far.