Prerelease talk:Super Mario 64 DS
Castle Grounds Similarity
Not the first to notice, but the Castle Grounds area in the DS version looks eerily similar to that of early builds from the original game.
Similarities include: The general shape of the castle closely matching with prerelease material, the bridge leading to the entrance featuring more curvature, the wooden bridge is straight rather than at a 40 degree angle, an indention in the wall under the stone bridge, a fenced section on the roof behind the tower, identical placement of windows, nearly identical looking hills, although the ones behind the castle were stretched to meet with the castle's back.
Because of all these similarities, this may mean that the devs used an earlier version of the map as it's base for the DS remake.