Tetris is one of the most popular and influential video games ever created. Developed by Russian software engineer Alexey Pajitnov in 1984, Tetris has become a global phenomenon, selling hundreds of millions of copies across virtually every gaming platform.
The game's name comes from the Greek prefix "tetra-" (meaning "four") and "tennis," Pajitnov's favorite sport. The game's pieces, known as Tetriminos, are made up of four squares each, which players must arrange to create complete lines that disappear, preventing the playing field from filling up.