The app finally opened. The screen went black, then flashed a bright, distorted image of a G-Man with bulging eyes. A single button appeared in the center of the screen. It didn't say "Play." It said "Subscribe to Premium for Physics."

"Simple Sandbox 2," Leo said, already spawning a fleet of flying cars on his own screen. "Or GoreBox if you want the chaos. Just stay away from the shady links, man."

He opened his browser and typed the magic words:

"Don't do it," his friend Leo whispered from the next seat over. "It’s a trap. Garry never made a mobile version."