He opened it. One line:

That's when the backfire hit him in real life.

Over the next hour, Leo learned the new rules. The Backfire Mod wasn't about visual flair. It was a mirror. Every violent act in the game created a real-world consequence. When he, out of habit, ran over a Ballas member on a sidewalk, his own leg suddenly cramped so hard he fell off his chair. A purple bruise bloomed on his shin, shaped exactly like a tire tread. When he used the "HESOYAM" health cheat out of desperation during a gang attack, his phone's battery drained from 80% to 2% in three seconds, and his actual, real-life bank account showed a $500 charge to a "Los Santos Medical Center."

Then he found it.

Leo ignored the chill crawling up his spine. He tapped "New Game."