While "highly compressed" versions (often ~2GB) are popular on unofficial sites, they can carry risks of malware or missing game files. Official Digital Purchase
The game requires legacy NVIDIA PhysX drivers to launch. These are usually included in the game folder or can be found on the NVIDIA website. While "highly compressed" versions (often ~2GB) are popular
Enjoy your mission, Ghost. Out.
Since the game is delisted from primary PC storefronts, you may find legitimate copies through these methods: While "highly compressed" versions (often ~2GB) are popular