Yes, a portable version of IGI 1 is technically possible. Because the game is from the Windows 98/2000 era, it does not heavily rely on the modern Windows Registry.

When downloading the IGI 1 FitGirl Repack, users can expect the following features optimized for modern hardware:

If a file claims to be IGI 1 I’m Going In portable FitGirl repack exclusive, be aware:

A better approach: search for Project IGI 1 portable (without the repack hype) on trusted forums like Reddit’s r/PiratedGames (check the megathread) or CS.RIN.RU.