My Mrs likes
01/ Amiga - Galaga, because the way it starts off slow builds up to a faster speed and the aliens have a set way of appearing on screen & to beat your own high score.
02/ Amiga - Superfrog, good music & graphics, entertaing and puzzle solving.
03/ Amiga /PC Lemming, cute charecters & more challenging the higher you go up the levels.
04/ PC - Centipede, longer you play it the faster it gets and the high score becomes more challenging.
05/ 1st Nintendo consul - duck shoot.
These games have been played from the mid 80's to current date