It's a custom render of the Luigi's Mansion intro and it looks really good. Seriously, this is just what it'd be like if the original was available on a HD console and they went with a creepier and more realistic art style:
http://www.youtube.com/watch?v=-RxqnqUXWzE
Damn, I can't be the only one wishing Nintendo would make a Luigi's Mansion game in an art style similar to that, right?
http://www.youtube.com/watch?v=-RxqnqUXWzE
Damn, I can't be the only one wishing Nintendo would make a Luigi's Mansion game in an art style similar to that, right?