While there is significant interest in a third entry for the Project I.G.I. series, it is important to clarify that . Instead, it is typically a fan-made modification or a re-titled version of an existing game, which makes its associated "trainers" highly suspicious or unofficial. Context on the "Igi 3" Label
Most trainers for this game include a standard "+5" set of modifications to help you breeze through tougher stealth or action sequences: Igi 3 The Mark Trainer
If you are looking for a trainer for the game actually titled The Mark (often confused for IGI 3), these programs typically offer standard tactical shooter advantages: "Igi 3 The Mark" is not an official