Leo squinted at his screen. The game he’d been waiting months for had finally downloaded, but instead of a epic fantasy world, he saw a jagged, purple-and-black mess of broken triangles.

“OpenGL isn’t an app, Leo,” she explained, laughing. “It’s a driver. Your graphics card speaks OpenGL. You don’t download it like Spotify.”

The purple triangles were gone. Instead, sunlight streamed through a forest canopy, shadows moved realistically, and water rippled with perfect clarity.

“That’s impossible,” Leo muttered. He had a brand-new Windows 10 gaming PC.