The Witcher developer CD Projekt is interested in Xbox One and Playstation 4 cross play for their upcoming Gwent: The Witcher Card Game.
Just like the Rocket League devs, CD Projekt have a solution ready to go, all they need is the green light from Sony.
In a recent interview with IGN, CD Projekt CEO Marcin Iwinski said
“Our upcoming Gwent: The Witcher Card Game will launch in a closed beta for PC and Xbox One later this year, and Microsoft already confirmed Gwent’s cross play feature not only between Xbox One and PC, but also other consoles should they allow it. We also do have a technical solution in place for PS4 and would love to add Sony’s platform to cross play at the start of the open beta. All we need is the green light from Sony”
He also encouraged other developers to show support for cross platform play between consoles and PC “At the end of the day, this is for the players”
— The Witcher (@witchergame) June 13, 2016