The 3DS, Nintendo’s latest portable gaming platform and the first with a 3D display, made its U.S. debut on March 27th. Nintendo moved 400,000 units on launch day in Japan, and Amazon U.K. said the device broke console pre-order records as well. So, being the subway riding gamer that I am, I knew I had to find out what all this hype was about. I took it for a spin over the last week, staying up late trying to beat games and carrying it in my backpack to rock on the subway. And now, after a week of 3D ga...