first-person shooter-type video game

Today, a handful of soldiers with advanced gear can see a few digital maps, through helmet-mounted monocles. Some pilots can get data about their world, on heads-up displays. But one day, troops could see an info-"augmented" reality all around them, with contact lenses that provide "first-person shooter-type video game" environments to those that wear them. At least, that's the idea behind the latest project from DARPA, the Pentagon's blue sky science and technology division.