It's Xbox/PC/Cloud like all their first party stuff.
In a showcase of 95 minutes where everything was labelled as “xbox consoles”, “Xbox console exclusive”, “console launch exclusive” this segment, the only one introduced by Phil (wearing an xbox t shirt too like anyone forgot he might be a fan of that brand …) and talked about by Kojima….
A segment where Kojima didn’t even have a title of the project to share or a spoken description of the vision, never mind a cgi trailer or an actual piece of gameplay. In fact literally no detail about this project was given… not even a splash screen like Agent all those years ago.
The only thing that could have saved this segment from being a dud, was the word exclusive …
And yet in that one segment, not a single mention was made of the word exclusive by anyone.
Well maybe MS just overlooked that detail - same as Tom overlooked mentioning he saw a mobile game.
And if
even stadia turned it down (and I doubt Stadia were the first point of call for “this” whatever it is) … well yeah.