When the file finally landed, it wasn't a game icon. It was a suspicious, unnamed zip file. Leo’s heart raced. He unzipped it, expecting the familiar LEGO logo to burst onto his screen. Instead, his wallpaper turned into a picture of a laughing skull, and his browser opened forty tabs for vitamin supplements.

Finally, he reached the "Mega-Download" page. A progress bar appeared, crawling forward with the speed of a turtle in a blizzard. 1%... 2%... He spent the next three hours imagining the adventures: building the Bat-wing, switching to Robin’s magnet suit, and finally taking down the Penguin.

The "full version" was a phantom. His PC had been hit with a "Joker toxin" of malware.