Awesome game! Play either the PlayStation®(1) or the Dreamcast version. Because other ports are broken!
The broken background-music-playback (BGM) on PS2/PC ports, completely ruins the atmosphere and the reason of this game!
The interactive and sequenced music/audio plays flawlessly on PlayStation®(1), but the graphics are not good as other versions.
Compared to PS2 the Dreamcast version (just like PC) has a slightly better/sharper pre-rendered backgrounds but the 3D models are slightly better on PS2.
The BGM playback on Dreamcast may not be great as the PlayStation®(1), but is very much better than the broken PS2/PC ports.
Still waiting for someone to provide a mod/patch to fix the PC version even after all these years!