If you are looking for the best experience today, the current official Steam/GOG/Xbox versions are significantly more advanced than the older v1.02 builds.
: Improved support for ultra-wide monitors (21:9) and fixed issues where certain UI elements didn't scale correctly at higher resolutions.
: Patched a progression-blocking bug where players could sometimes get stuck in the environment during the "Sea of Corpses" sequence. Note on Modern Versions
: Addressed various crashes reported during specific cinematic transitions and heavy combat sequences.