Nintendo may want to send its crystal ball back for a refurb, because it has once again failed at forecasting. It just announced a downgrade to its 2016 estimates because the new 3DS and 3DS XL portable consoles haven't been selling as well as hoped. The company thought it would move 7.6 million units across the world between April 2015 and March 2016, but it's now revised that figure to 6.6 million. It also lowered its 3DS software sales estimate by 9 million units. With Wii U sales estimates unchanged, that means the company expects 2016 revenue to fall 70 billion yen, or approximately $620 million.