As for the game's setup.exe file, it's likely that you're looking for a way to download and install the game on your computer. However, I must remind you that downloading copyrighted materials without proper authorization may be against the law in your region.

Would you like to know more about the game's gameplay mechanics or its system requirements?

Here's an interesting story behind the game:

The game was initially intended to be a more realistic and tactical take on the first-person shooter genre. The developers aimed to create a game that would focus on stealth, strategy, and realistic military operations.

Despite this, Project IGI 1 has maintained a loyal fan base over the years, and many players still enjoy playing the game today.