This article has a talk page!This page details one or more prototype versions of ICO.
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Jampack Summer 2001 Demo Disc'Disc Version' listed as June 8, 2001. Contains very early animation data, an older iteration of the credits, various map changes, and a notable texture asset that go unused in later builds.
June 26th Demo BuildPresent in several demo discs:*PlayStation 2 Demo Disc Version 2.3 (SCUS-97155)
*Kiosk Demo Disc 2.03 (SCUS-97156)
*Official U.S. PlayStation Magazine Demo Disc 49 (SCUS-97158)
It features a temporary debug feature that was left accessible to casual players, as well as unique forms for the shadow creatures that went unused.
ICO US Demo Disc'Disc Version' listed as August 2, 2001.
US Preview Version'Disc Version' listed as August 7, 2001. Contains some notable differences compared to the full US release, which would be finalized just two weeks later.