Why Do You Keep Seeing a Game After You Stop Playing?

Why do you sometimes keep seeing a game even after you’ve stopped playing? Close your eyes after hours of Tetris, Candy Crush, Wordle, racing games, or other repetitive games, and something strange can happen: the patterns, shapes, movements, and images seem to continue inside your mind. This phenomenon is often called the Tetris Effect — but what’s actually happening inside your brain may be far more fascinating than the name suggests. In this video, we explore a remarkable neuroscience experiment, the mysterious connection between gaming, sleep, visual imagery and memory, and what these strange mental replays may reveal about the hidden processes taking place in your brain when you’re no longer paying attention. What seems like a harmless side effect of playing too long opens the door to a much bigger question about how the human brain stores, rehearses and processes experience. And once you understand why scientists became fascinated by this phenomenon, you may never look at those images behind your closed eyes the same way again.