PC versionPS2 Fans have made a PC version. Some are still early, so read the project page first.
Fans took Ico apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here are the 2 projects we know about:
PC, Android, iOS and macOS port of the ICO (PS2) decompilation (nathanialf/ico): Windows, Linux, Steam Deck, Android, iPhone via LiveContainer and Apple-silicon Mac (contributed). Contains no game data.
Decompilation project for the PS2 game ICO, targeting 1:1 matching