Heat, to them, was less a variable than a mood. It was the flaring red that announced your life had been noticed by the city’s underbelly. Heat measured attention—how many cops were after you, how reckless you’d been, how loudly you’d dared the night. Too little, and winning felt like playing after the sun had left the party; too much, and the world became a looming, pixelated storm of interceptors and spike strips. They wanted both: the high-risk ballet and the quiet moments of customization. So they poked into the save file.