A strange little side quest
The fun part of looking behind Tetris is seeing how many older ideas are still alive in modern play. Atari's Gran Trak 10 from 1974 is recognized as the first arcade racing video game. The same trail leads to another fact: Pong was field-tested in California bars in 1972 and helped launch the modern arcade-game era. The details change, but the appeal of learning a system and trying again is remarkably persistent.