3D gaming glasses

"Hoping to boost sales of its 3D televisions among gamers, LG showed off technology that lets traditional split screen multiplayer games be played full screen.

Called Dual Play, it works by making a 3D display essentially two 2D displays overtop each other: Rather than sending different images to the left and right eyes of one player, it sends different images to the left and right players. One player wears a set of polarized 3D glasses with two left eye lenses andadd the other player wears a set with two right eye lenses. That allows each player to see their own section of the game full screen, but only in 2D."
LG said the technology works with any of its Cinema 3D televisions and the glasses will be included with LW980 televisions, which will ship later this month, according to an LG spokeswoman at the company's booth. She also said that users could make their own Dual Play glasses by just swapping lenses.
The TVs can toggle between a traditional split screen view, or the Dual Play view which, without 3D glasses, looks confusing as two screens are stacked on top of each other.

Though the viewing for games is in 2D it is a lot better than active glasses. Great Job LG on this one though I suspect people have been doing this at home for a while. 

you can check out all the facts at the original article here