The difference was immediate. The main menu was the same, but a new icon shimmered in the corner: a cracked gear. He clicked it.

When he rebooted Trailmakers , the save file was gone. The cracked gear icon was missing. The forum post from Rustbelt_Rembrandt had been deleted.

Leo downloaded the single .dll file with the caution of a bomb disposal expert. He dropped it into the game files, held his breath, and launched Trailmakers .

“Don’t worry about it,” Leo grinned. “Watch.”

Mira and Kael joined his server, bewildered.

“The Debugger isn’t an enemy,” Leo realized, sweating. “It’s an anti-mod . It’s the game’s immune system.”