Once the game is at the main menu, press the designated "Hotkeys" (usually F1, F2, etc.) to enable the cheats. You should hear a "Trainer Activated" voice or a beep. A Note on Project IGI 3
: If you wish to play the original series with cheats, use established cheat codes for the legitimate versions, such as left ctrl+left shift+F9 for level unlocks in the first game. G.I. Origins ? IGI 3 IS FINALLY HERE (IGI ORIGINS) Igi 3 The Mark Trainer
IGI 3: The Mark Trainer is the “black sheep” of the IGI family. It is not a good sequel to Covert Strike , nor a particularly good tactical shooter by 2006 standards. But viewed in isolation—as a budget, squad-based action game—it has a certain scrappy charm. It’s for series completionists and curious retro gamers only. Once the game is at the main menu,
Monetization & Release Strategy
Do not take any weapons except the tranquilizer pistol and a single smoke grenade. The Trainer’s augmentation can sense the electrical current in loaded firearms. It is not a good sequel to Covert
This is the most sought-after feature. In The Mark , a few stray bullets can end a mission instantly. Activating infinite health ensures the player's health bar does not decrease, allowing them to traverse the open maps without the fear of instant death from a sniper hidden in a bush.
I.G.I. maps are huge. Players often have to sprint long distances between objectives. Infinite stamina removes the fatigue mechanic, allowing the player to run at full speed indefinitely, which is crucial for speedrunning or escaping overwhelming firefights.