ARK: Survival Evolved is the newest game that has been denied crossplay between two consoles. This is because Sony won’t allow it for some reason.
A person asked Jeremy Stieglitz (lead designer on ARK: Survival Evolved) via Twitter if cross play will be possible between the PS4 and Xbox One consoles. He replied with: “We have it working internally, but currently Sony won’t allow it :(”
Crossplay is possible between PS4 and Xbox One, but Sony continues to deny access to it. Rocket League, Tekken 7 and other games also lack crossplay between PS4 and Xbox One mainly because Sony won’t allow it.
This is disappointing to hear, although gamers should speak up and voice their opinion on the matter. If more voices are heard, Sony might hopefully change their stance on crossplay between consoles.