The monster-collecting Pokemon craze of the late 1990s started as a series of titles for the company's Game Boy portable system and eventually sold in excess of 106 million units.

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That could pose a threat to the temporary monopoly Nintendo was poised to get on portable 3-D gaming when its handheld game system launches in March.

CNN: LG unveils world's first 3-D smartphone

The system was designed by the team that thought up the Game Boy, but the machine was barely portable.

CNN: Mark Milian