This is a sub-page of Proto:Ōkami (PlayStation 2)/Nov 18, 2005 Preview.
coreid.dat#
Present in coreid.dat are early godhood icons. These are seen in a later demo but not the final game. They are out of order internally.
Assets used in later demo disks are also present, including English assets.
An early wallet spotted in the trailer is also present. Additionally, the astral pouch seems to be recolored in game and is green by default.
coreidtex and coreid#
coreidtex and coreid are identical. Not to be confused with coreid.dat above.
(Source: Kayya (L & R discovery))
files00.da#
Some unused bug icons are present in files00.da.
data.afs#
Floating around in the files is what appears to be a menu mock-up placed over a screenshot. The files were named awfully lazily.

(Source: Kayya (Discovery))
r208.dat#
Unlike Kusa village in the final release, which uses a mock-up of Taka Pass, the proto uses what appears to be an early screenshot of... somewhere. Blurry text in the top left may indicate this could have been taken out of engine. This terrain gets reused for the opening Moon Cave cutscene and part of Yoshpet. It can be seen here on the noclip website.