The prevalence of trainers for Project I.G.I. actually helped sustain its cult following. By removing the barrier of the "no-save" mechanic, players were able to explore the massive outdoor maps and experiment with different tactical approaches that would otherwise be too risky to attempt in a standard playthrough.
Overloading memory with too many active cheats can lead to "buffer overflows" or "Illegal Operation" crashes, which were common in early 2000s Windows environments. Legacy Impact Trainer Of Project Igi
Prevents the player character, David Jones, from taking damage from bullets, explosions, or falls. The prevalence of trainers for Project I