Google has turned powerful machine learning technology into a fun game.

Emoji are many things to many people. Depending who you ask, they're fun, flirty, confusing, a whole new language, or the demise of language itself. Google's Emoji Scavenger Hunt adds one more to the many meanings of emoji: a way to play with machine learning. The technology involved in this browser-based game is complex, but the idea is simple. An emoji appears, and using your phone's camera you hunt around for examples of it IRL. Maybe you'll see an emoji of a clock, or a shoe, then it's your task to find one before the timer runs out.