YouTube VR - Watch YouTube cat videos (and more) in VR with Daydream
ARLOOPA AR App - Add digital objects to the real world with AR
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
SuperPaint - Virtual Graffiti - Tag your world with virtual graffiti
Think with Google - Put Google research and insight behind your thinking.
OpMon - An open source Pokemon clone, with monster fights