Archive.org: Project Igi

Project I.G.I. follows David Jones, a former British Special Air Service (SAS) operative working for the Institute for Geotactical Intelligence. Sent into the former Soviet Union, Jones is tasked with capturing a Russian arms dealer to prevent a catastrophic nuclear crisis.

You must enable "Legacy Components > DirectPlay" in Windows Features. dgVoodoo2:

A video game consists of more than just its executable code. The physical experience of 2000-era PC gaming involved rich documentation. The Project I.G.I. archive pages often include high-resolution scans of: The original jewel case artwork and big-box packaging.

There was no mid-mission saving. A single sniper bullet could end a 45-minute infiltration. This created a level of tension rarely matched in modern gaming.