A strange little side quest
Even a quick game like Merge Diamonds Treasure! sits on top of decades — and sometimes centuries — of ideas. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The broader history adds one more wrinkle. Midway's Gun Fight from 1975 was the first arcade video game to use a microprocessor. That gives Merge Diamonds Treasure! a little more company than it first appears to have.