A strange little side quest
The fun part of looking behind Puzzle Bunch is seeing how many older ideas are still alive in modern play. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The surprising part is how quickly the next milestone followed. 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.