Google Glass is one stab at augmented reality. Its goal, simply, is to offer useful information and enhance the user's real-life context. In other words, a location-sensitive app might tell you when you're approaching an interesting landmark and help you find it.
You can build games with that. It's obvious that something resembling its location-aware MMO Ingress, for Android, will appear on the device.
Meta, on the other hand, wants to scan your house and fill it with zombies.
Meta is "way, way, way, way more hardcore than any other wearable computer out there right now," CEO Meron Gribetz told Gamasutra this week when demoing a prototype version of its Meta Pro glasses, due in June 2014. "We're the entertainment media consumption gaming wearable computer, whereas Glass is something else."
Like many Silicon Valley CEOs, Gribetz firmly believes in the revolutionary nature of his product. "It's a very grand project. We're purporting to become the replacement for phones and computers in the not-too-long run," he says. "We replace the keyboard and mouse... We want people to wear this as much as they use phones and tablets."

Meron Gribetz
The Pro glasses will be tethered via a slim cable to a pocket PC with an Intel i5 CPU and 4 GB of RAM, which will both process the sensory data and power the games that run on the device. The goal, of course, is to eventually get rid of the PC.
Gribetz also expects to increase the glasses' field of view with every iteration -- it's currently 40 degrees, which is a lot less than Oculus Rift, but Gribetz argues that it's a "much more difficult a problem... to do see-through optics... than to do Oculus Rift optics." It's a big step up over Google Glass' 14 degrees.

What The Glasses Do
The tech, though expensive -- at $3,000 a pair for the Pro -- is undoubtedly interesting and, let's face it, futuristic. When wearing the glasses, it's like having a transparent HD monitor (at 720p) a few feet directly in front of you. If you look at a white wall, the image is clear; if you look at a person, you can easily see them through it. Though the Meta demo Gribetz showed Gamasutra was primitive in its function and appearance, the potential of the tech is immediately obvious. Meta surrounds you with 3D objects -- and you can reach out and interact with them. That is, of course, where game developers will come in. The glasses have what amounts to an outward-facing Kinect on the front, though the company's CTO tells Gamasutra it's a much more precise and powerful 3D sensor. With it, the glasses gather data from the environment and objects in it. In a game context, you could take that information and build game logic that interacts with the real-world environment, including the player's hands and held objects as well as the floor and walls. Meta glasses will also be proximity-aware and networked "to give each other insight into what each other is doing, in case it's really fun," Gribetz says. "If I'm playing a tabletop game, you can join in."