See
Léna Piquet (Froyok), [Breakdown] Shadow of the Colossus (PAL, PS2), 2012 https://www.froyok.fr/blog/2012-10-breakdown-shadow-of-the-colossus-pal-ps2/
The Making of Shadow of the Colossus (PDF, hosted with the breakdown above) https://www.froyok.fr/blog/2012-10-breakdown-shadow-of-the-colossus-pal-ps2/resources/making_of_sotc.pdf
Fumito Ueda interview, The Making of the Colossi https://glitterberri.com/extended-developer-interview/making-of-the-colossi/