Pokémon GO
Obviously you all know what Pokémon GO is, unless you have been living a life of seclusion somewhere in the mountains, with no human contact and no, well, internet(How did you get here?).
No doubt the Augmented-Reality game has taken the world by storm, and still has a ton of users. It even surpassed long time runners Twitter, Facebook as well as Pornhub on most usage. And you have probably played as well as enjoyed it too.