A strange little side quest
Grombi trivia break for Ninja Showdown: The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The broader history adds one more wrinkle. Boxing was part of the ancient Olympic Games by 688 BC, long before gloves, weight classes, or timed rounds existed in anything like their modern form. That gives Ninja Showdown a little more company than it first appears to have.