PlayLink

PlayLink is a new multiplayer gameplay experience by PlayStation, which turns mobile phones and tablets into controllers for several PlayStation titles.

These titles used or to be used in conjunction with PlayLink include a comedy quiz game, That's You! and the drama and crime-thriller game, Hidden Agenda.

Description
This quotation comes directly from PlayStation's official website.

"From quick-fire quizzes to immersive multiplayer experiences, PlayLink titles are all about social gaming that everyone can enjoy. Pop a game into your PS4, pick up your smartphone or tablet, gather around your TV and prepare for a refreshingly different experience – without the need for multiple DUALSHOCK 4 wireless controllers.

Grab those friends and family members who don’t usual play video games – PlayLink titles are the perfect way to bring them into the mix… but if you’re already gamer you’ll have a blast too."