The repack version usually comes with a crack, eliminating the need for activation. However, if you encounter any issues, you can try the following:

: This is the most popular way to play the classic game on modern hardware. It acts as a comprehensive "wrapper" or patch that allows the game to run at modern resolutions like 1440p or 4K while fixing compatibility issues for Windows 10 and 11. IGI Remake

Released in 2000, Project I.G.I.: I'm Going In redefined the tactical shooter genre. Known for its punishing difficulty, massive open-map layouts, and lack of a mid-mission save system, it became a cult classic. Decades later, fans are still searching for a "Project IGI Remastered" to experience the Geostationary Orbital Surveillance Satellite (GOSS) missions in high definition. The Search for a Remaster: Official vs. Fan Projects 1. I.G.I. Origins (The Official Prequel)