"The Princess is in another castle."
Yup, Mario's going to be busy. That's a lot of castles to check. 512 million in total.
The thing that seems strange about this so-called fake video is how well Peach's castle looks. I doubt even with the best N64 emulators can you capture the textures of every polygon so perfectly, or at least without any visible oddities. And then to reconstruct the castle? Seems like a lot of work for a fake.
I thought the count was impressive, fake or not, because it seems to accurately count the number of castles that have passed across the screen. You'll notice at some points, the number jumps up suddenly, like when the camera reveals that the surface of castles is the path leading to a castle made of castles, or when during the mega-castle roof climb the camera swings around to show the rest of the field.
As it climbs the spire, the camera is angled in such a way as to only pick up one side of it, so the castle count goes up by exactly one just as any viewer would count them.
The biggest jump is after reaching the pinnacle of the pinnacle, and then you notice there are WAY more in the horizon. Aside from a seeming pause before hitting 512 million, (though the last one appears on-screen before the count finishes, as it should), it seems very accurate.
Strange thing for me to pick on, but that part is the most impressive to me, not the distorted Mario and Samus at the end. I love the Super Mario 64 music that fits it so well.
I'm guessing they chose Peach's castle because it's one of the most recognizeable 3-D areas, ever. More memorable than any place in Sunshine, or any other Mario game, or any other game, even. It also has simpler polygons than most, being a first-generation N64 game. There probably isn't any bump-mapping or fancy lighting or even any motion, aside from the flags at the beginning. So I don't think the number of castles is unrealistic, if you see it as a non-game scenario with minimum extraneous things to calculate.
Anyone else notice that the original castle seems to be at the very location on the field where Mario starts his adventure?
Even if it is a fake, no one can deny the impressiveness of this segment. Most of the rest of the clip is easy to create, but not this.