Here is the real guide to playing IGI 2 on Windows 8.1 safely, legally, and with better graphics than the original CD allowed.
: To fix screen resolution and lag, download the dgVoodoo2 wrapper. Copy the .dll files from the MS/x86 folder into your IGI 2 installation directory to force modern DirectX rendering and Full HD resolutions. igi 2 download for pc windows 81 exclusive