There's a saying among videogame makers: Never count Nintendo out. After all, the Japanese company launched a revolution 25 years ago with the launch of Game Boy. Nintendo dominated the video-game world in the '80s and '90s. But in the early 2000s, Sony and Microsoft launched the PlayStation2 and Xbox, and Nintendo's response did not turn out to be good enough. Independent publishers had largely started bypassing the system with new releases. Then, in 2006 the Wii hit stores, and Nintendo was quickly climbed back on top, revolutionizing the industry with a new way to play games that competitors tried to emulate. Nintendo embraced its individuality with the DS, DS Lite, and Wii, each of which would go on to sell around 100 million units worldwide.Today, with the Wii U, Nintendo's back at the bottom of the heap, being outsold by the PlayStation 4, but this time around, industry insiders are less quick to start writing the company's obituary. After all, it is still the world's largest video company by revenue.