Mia’s eyes lit up. “So I can play it without the original disc?”

The problem? Her PC didn’t have a disc drive. And the game’s original CD was long gone, lost in a basement flood years ago.

He pulled up a chair. “An ISO is basically a digital clone of a CD or DVD. It’s a single file that contains everything the disc had. You download it, then ‘mount’ it like a virtual disc drive. The PC thinks the real CD is inserted.”

“Yes—but,” Leo said, holding up a finger, “and this is important—only if you already own the game legally. We bought that CD back in 2005. So downloading an ISO of it is okay. But downloading a game you never paid for? That’s piracy. Big difference.”

That’s when her older brother, Leo, a computer science student, walked in. “You look like you’re trying to solve a murder,” he joked.