Since Project I.G.I. 1 is an older game, always back up your original game files before applying any patches or running trainers to avoid crashing.

Of course, the mod breaks the game in hilarious ways. The enemy AI, designed for a grounded player, will stare at the sky in confusion as you rain down bullets. You might land on a barbed wire fence and die instantly. And if you jump while inside a tunnel? Good luck finding your way back to the map—you’ll likely clip through the geometry and fall into an endless green void.

, you typically need a or a trainer , as there isn't a single "mod file" that changes only jump height. Recommended Download: I.G.I. 1 Cheat Table