When a coffee shop buzzes and your phone lights up with a new puzzle, you’re already in the middle of a mobile‑first entertainment revolution.

United Kingdom: Last week I was waiting for my latte when a notification popped up: “New level unlocked in Quantum Quest .” I opened the app, and within seconds I was solving a 3‑D maze that used the phone’s gyroscope. That tiny, handheld experience is a snapshot of how mobile gaming apps are…