Tetris is twenty! If it seems you have had occaisonal dreams involving falling shapes for most of your life, you are probably right. 

“The simplest games are generally the best. And Pajitnov’s idea was a simple adaptation of a board game called Pentamino. The 29 year-old programmer made the first prototype from a glass and little blocks to drop inside it, each of which consisted of four cubes. You got extra points for completing a row.

Pajitnov’s friend, Gerassimov, was sixteen at the time, and did the programming to allow the game to run on western IBM computers. The blocks hit the fan after that.”

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