Trainers are for single‑player use only. Never use them online (though NFSU2’s multiplayer is long defunct officially). Also, saving a game with cheats active is fine — but some trainer effects (like infinite rep or all unique parts) might permanently alter your save file, so backup your SaveGame folder first.
In the golden era of PC gaming (roughly 1998-2006), third-party modification tools were as celebrated as the games themselves. For fans of Need for Speed: Underground 2 —a game still revered for its deep customization and atmospheric world—one tool stood above the rest: . nfsu2 trainer 1.2
You might ask, "Doesn't using cheats ruin the game?" Not necessarily. In the era of "Games as a Service," many players value their time differently. Here is why the trainer is a must-have for a modern playthrough: Trainers are for single‑player use only