Google launched a series of mini-games for its high-tech Google Glass specs that allows players to use their heads as rackets to play a round of virtual tennis or slice shapes out of thin air like a karate master.
The company posted a new video to YouTube that reveals how we will be able to play video games with Google Glass. The clip also aims to encourage developers to build games for Glass.

The mini-games take advantage of Google Glass' voice recognition software and sensors, so you can fire weapons with your voice, slice with your hands or tilt your head back to maintain balance.
"Each game is visually simple and straightforward to play," the company said in an official blog post. "We intentionally wanted games that are quick to get into when you have a few, free minutes and just as easy to get out of when you want to turn your attention back to reality."
Glass Explorers can access their Glass dashboards via the web or the MyGlass app to try the mini-games, and can activate them with a simple click. Here's a look at the games, as demonstrated in the video above.
Players use their heads as racquets in this rally game. The device's built-in gyroscope and accelerometer work together to read the location and tilt of the player's head as it moves left and right.
Players once again use their heads by shifting left and right — but this time, it's to keep a pile of shapes from falling over.
This classic shooting game uses voice commands. For example, saying "pull" launches a pigeon in the direction you're looking; saying "bang" will shoot a virtual missile its way.
This card-matching memory game is also played by gently moving one's head. The gyroscope and accelerometer team up to precisely follow the position of the player’s head.
We used the Photosphere camera mode to map the surrounding cards and the compact Min3D library on top of OpenGL to render the game.
By moving hands in front of Google Glass' camera, players can slice and dice shapes to rack up points.
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