It was announced some time ago that G.R.R. Martin was collaborating with Neil DeGrasse Tyson on a videogame.
http://mentalfloss.com/article/503070/neil-degrasse-tyson-recruits-george-rr-martin-work-his-new-video-game
https://hellogiggles.com/lifestyle/george-r-r-martin-and-neil-degrasse-tyson-are-creating-a-video-game-and-omg/
https://www.independent.co.uk/arts-entertainment/tv/news/game-of-thrones-george-rr-martin-neil-degrasse-tyson-bill-nye-gaiman-a7861356.html
I don't know if this is the game he is referring to or what is the status of said game but this news existed.
Also, Neil had G.R.R. Martin featured in a recent StarTalk episode where he interviewed Martin about A Song of Fire and Ice which at the very least seems to point out that they are still in contact to some extent.
Nintendo is selling their IPs to Microsoft and this is true because:
http://gamrconnect.vgchartz.com/thread.php?id=221391&page=1
