Tetris

How to play: pieces fall into a ten-wide well; steer them with the arrow keys and spin them with the up arrow (or X, and Z spins the other way). The down arrow hurries a piece along and the space bar drops it straight onto its shadow. A filled row clears — one to four at once score 100, 300, 500 or 800 times your level — and every four lines the level rises and the fall quickens, up to level ten at the finish line. Clear 40 lines and the game is won: the clock stops and your time goes on the record board. Stack to the top of the well before that and the game is over. The bag deals all seven pieces before repeating any, so no drought lasts more than twelve pieces.