Getting a bit more modern now, with a lovely one-switch puzzle game, called Ichi (which I know is Japanese for one, thanks to the catchy "itchy, knee, san, she, go!" for 1,2,3,4,5).
The aim of the game is to rotate the angle of your red triangle to bounce a ball into all the inner grid shapes. It does require some pretty rapid thinking and responses, but it's easy to retry levels or go back to easier levels thanks to a nice hold and release menu system. Like the catchy J-Pop music. Very Star Trigon.
Game found via the excellent Video Juegos Accessibles blog