Here's a list of all cross-platform games, now that the PS4 joins in

PS4 didn’t just join in on cross play. Sony were doing it way before Microsoft since PS2 with PC. And have more cross play games on PS4 than other consoles.

Making a list of “partial” cross play games to lengthen the article with it’s small selection of full cross play games wasn’t necessary.

And, what’s the point of adding Xbox play anywhere games to this article when that’s cross buy. Not cross “play.” Anywhere games don’t necessarily cross play with Switch or PS4.

Writer must have had an article word quota. The list of full cross play games would have ended up as one, short sentence.