Significantly smaller archive size (compressed from cumulative 41.1 GB to 3.1~4.7 GB, depending on selected components).Selective download feature: you may skip downloading and installing of bonus and language files you don't need.100% Lossless & MD5 Perfect: all files are identical to originals after installation.Note 2: Russian text-only edition has Pinnacle Station DLC in English by default ZOG fan translation v0.9 can be copied over original files after installation, if you need it.Note 1: Russian Gold edition officially doesn't have Pinnacle Station DLC.
Use files in "_Optional Autoloader" folder in case installer's inability to write proper registry settings for you.Bonus content (OST, Art Book, Prima Official Guide - 241 MB) added, as an optional download.Missing French, German and Italian language packs added (7.8 GB).Based on three separate releases: Steam English (10.5 GB), Russian text-only (10.5 GB) and Russian Gold (12.1 GB) editions.