Based on GOG v2.1.0.4 release: 5,868,622,158 bytes
100% Lossless & MD5 Perfect: all files are identical to originals after installation
NOTHING ripped, NOTHING re-encoded
Game version: v1.0.0.1
Selective download feature: you can skip downloading and installing of unnecessary language packs and unused video (pre-rendered beta game scene).
Significantly smaller archive size (compressed from 5.5 to 2.3/2.5 GB for any single language)
Installation takes 7-15 minutes (depending on your system)
After-install integrity check so you could make sure that everything installed properly
HDD space after installation: up to 8 GB
Use “language_setup.exe” in game root to change the game language
Use “VideoSetup.exe” (or icon on desktop) in game root to change graphics settings
CPU: Core 2 Dual Core 2.4 GHz or AMD equivalent
RAM: 2 GB
OS: Windows XP SP3, Windows Vista SP1, Windows 7
VIDEO CARD: Nvidia Geforce 7800 GTX with 256MB of VRAM or ATI Radeon HD 2600 Pro with 256MB of VRAM
FREE DISK SPACE: At least 7GB of free space