It sounds like you're referring to a no-CD crack for the game Project I.G.I. (I'm Going In).
Creating a "no CD crack" for a game like "Project IGI" involves bypassing the game's copy protection mechanisms to allow it to run without the original CD. However, discussing or promoting how to circumvent copyright protections can be problematic. project igi no cd crack work
For users working with original retail files, the process generally involves: It sounds like you're referring to a no-CD
from a reputable game-fix repository. Copy and paste it into your game installation folder, choosing when prompted. Widescreen & FOV Fix No Music: Some versions removed the background score