If this is one guy who did, then he's very talented, but it's obviously fake, but there's an eerie amount of work put into it.
For starters, there's way too many effects, especially at the beginning and they really confuse the message. The Gamecube font, DS screen motion graphics, and some of the other icons that i've seen elsewhere are really derivative of current and not imaginative at all. And, wait... NES was released in the US in 1985, wouldn't that be the date that Nintendo uses for a US promotional video?
The infinite castles scene was nifty, but no more impressive than the Shenmue "Tower of Babel" demo something like six years ago. And is the music accompanying it a remix of Aulbath's original theme from Vampire 2? Sounds similar, going by memory.
The Revolution concept left me with more questions than answers. One half of the brain plays games and the other makes them? Thirty second load times? How is the environment capture eye actually incorporating the environment in the Metroid game? The user's room looks nothing like the room in the game. And how is it tracking movement exactly? What's to keep me from stepping on the brain? And i'm still not sold on the concept of VR in mainstream applications, unless they've countered the motion sickness and of course seizure issues.
i did like the look of the Mario game at the end, but the animation looked really bad and Mario looked more like Luigi. For a flaship series like Mario, it was too unpolished.
Good job by fans, but it's essentially a summarized visual version of a Nintendo history thread and a Revolution speculation thread.