Esiar on 04 July 2015
That would be silly. They probably look at the worldwide sales to decide that. Xenoblade having 1.1 million sales across the Wii and 3DS justifies a sequel from a sales perspective, but in Japan it's at 240k. And with Zelda, only 4 games in that series (With 17 main games) have sold over 1 million in Japan.
Can't wait for The Zelder Scrolls 3: Breath of The Wild Hunt!
