The Gameboy was launched into the world in 1989. Bundled with the handheld console was the addictive puzzle game Tetris. Alone they were both great products, but together they formed potent combination that quickly became a worldwide phenomenon.
The new Tetris players didn’t just see it’s blocks on their Gameboys. Tetronimos appeared on ceiling tiles, boxes of cereal, milk crates, floor tiles, or anything with squares. Playing Tetris trains its players to see it’s shapes everywhere, and how those pieces could fit together. This bleeding of the game’s mechanics into everyday life came to be known as “The Tetris Effect“.