A strange little side quest
Even a quick game like Spring Trails Spot The Diffs 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 timeline takes another interesting turn: The Oregon Trail eventually appeared across generations of computer hardware and sold tens of millions of copies, making it one of the most enduring educational games. It is a good reminder that simple game mechanics can carry a surprising amount of history.
