A strange little side quest
There is a neat bit of history hiding behind the kind of play you find in Jewel Block Puzzle. Alexey Pajitnov created Tetris in 1984 after drawing inspiration from pentomino puzzles, then simplified the idea around shapes made from four squares. And then there is this: Pong was field-tested in California bars in 1972 and helped launch the modern arcade-game era. The screen is modern; the urge to test skill, pattern and timing definitely is not.