My 1951 Bingo Bango is a 5 ball game and its imperative you get a good first ball as you have to have achieved a couple of features and then lose a few balls to get the PF to light up with specials etc. You require at least 1 preferably, 2 balls to hit that centre target!
My youngest game is 1980 so its always my aim is always to get the free game or extra ball... ha ha - that's as far as the code goes but its rare I get there!