– Unfortunately, no official key recovery service exists for IGI 2 today. Your best option is repurchasing on GOG (often $5–10 on sale).
Today, the "CD key" has evolved into a digital commodity found on third-party marketplaces: A brief history of DRM in video games - Prompting Culture igi 2 cd key
The CD key for I.G.I. 2 functions as a serial number—a unique string of alphanumeric characters typically found on the back of the game's jewel case or on a sticker applied to the manual. – Unfortunately, no official key recovery service exists