» Poor sales might be the cause: Amid reports that 3DS sales are roughly 39 million units off of projected forecasts, the device, noted for its unique 3D screen (which does not require glasses, by the way), is dropping from $249.99 to $169.99 next month. The 3DS, while well-reviewed, faced a number of problems at launch, including bad timing — with the console having just come out before the devastating earthquake hit Japan, Nintendo’s home and a key sales market. On top of all that, Nintendo is facing unprecedented competition in the portable market, what with mobile phones getting in on the territory Nintendo exclusively dominated for years. Oh, and 3D is hard on the eyes. That seems like a good reason.