It would seem that the Google engineers are getting extra creative. They just shared they will be releasing a GoogleMaps based game that will be coming to Google+ very soon. The game is a marble-maze style game that uses the reality of GoogleMaps as its "playground". Here's a quote from the TalkAndroid article with some more details:
You can check out the promo video of the game above. What do you guys think?The game is based off a unique technology created by the Google Maps development team. The technology— called WebGL– features a unique 3D engine powering the graphics. What’s special about the technology is it can create 3D web graphics you can see without having to install additional drivers or software.
Source: GooglePlusTalk.net via TalkAndroid