A strange little side quest
Here is a rabbit hole for the next loading screen in Squid Game Differences: The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The same trail leads to another fact: Spacewar! appeared on MIT's PDP-1 in 1962 and became one of the earliest influential computer games shared among programmers. It is a good reminder that simple game mechanics can carry a surprising amount of history.