Major video-game makers wowed game fans at the Tokyo Game Show (TGS) on the weekend with products such as Sony's 3-D games, Microsoft's controller-free motion-sensor system Kinect and Capcom's super popular "Monster Hunter" series.

But aside from the massive crowds at big game developers' booths, this year's TGS saw booths set up specifically for Apple's iPhone and iPad games as well as Google Android games as part of a newly established "Mobile Area."

The appearance of these booths is indicative of a current wave of change sweeping the Japanese video-game industry.