A strange little side quest
Planet Explorer Rounding belongs to a much longer story of play than a browser tab might suggest. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The same trail leads to another fact: The Oregon Trail began in 1971 when three student teachers created a computer simulation to help Minnesota schoolchildren learn American history. It is a good reminder that simple game mechanics can carry a surprising amount of history.