What puzzle video game was created by Russian designer Alexey Pajitnov in 1985?

The highly addictive and globally recognized puzzle video game, first introduced in 1985, was the brainchild of Russian designer Alexey Pajitnov. Working at the Dorodnitsyn Computing Center of the Academy of Sciences of the Soviet Union, Pajitnov developed this groundbreaking game, which tasks players with strategically rotating and arranging falling geometric shapes to form complete horizontal lines. These iconic shapes, each made of four blocks, are known as tetrominoes.

Pajitnov's inspiration for the game came from a traditional wooden puzzle called pentominoes, which uses shapes made of five blocks. He simplified this concept to four-block shapes, or tetrominoes, to make the game more manageable for the computers of the time. The name "Tetris" itself is a clever combination of "tetra," the Greek prefix for four, and "tennis," Pajitnov's favorite sport.

The initial version of the game, created on an Elektronika 60 computer, had no graphical interface and used text characters like brackets to represent the falling blocks. Despite its humble beginnings and text-based display, the captivating gameplay quickly spread through Moscow via floppy disk copies, gaining popularity among Pajitnov's colleagues and beyond. Its simple yet profound mechanics eventually led to its international release and immense success, especially after being bundled with the Nintendo Game Boy, cementing its status as one of the most beloved and enduring video games of all time.