A strange little side quest
Grombi trivia break for Laqueus Chapter III: The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. That old idea kept changing rather than disappearing. Spacewar! appeared on MIT's PDP-1 in 1962 and became one of the earliest influential computer games shared among programmers. That gives Laqueus Chapter III a little more company than it first appears to have.