Google has started selling their new Project Tango tablet to the public, and it has some pretty unique features for a tablet/smartphone.

Project Tango is an exploration into giving mobile devices a human-scale understanding of space and motion.

What if you never found yourself lost in a new building again? What if directions to a new location didn’t stop at the street address? Imagine playing hide-and-seek in your house with your favorite game character. Imagine competing against a friend for control over physical space with your own miniature army.