Heya - Place eggs in AR and leave a secret inside 🐣
Paper Signals by Google - Build-it-yourself objects that you control with your voice.
World Brush - AR app where you paint on the real world for others to find
Scratch - Scratch is a programming language that makes it easy to create your own interactive stories...
InternetCaching - An internet treasure hunt platform.
Treasure Hunt - A scavenger hunt app for kids, powered by machine learning