Sound Effects, Visual Feedback & Longer Flippers.

By the late 1960s, audio feedback, light signals and longer flippers become important elements of a more modern pinball experience.

 

Bells, chimes, clacks and lights give players clearer feedback for hits, scoring and game events.
This makes actions on the playfield easier to hear and see.
As a result, the game becomes more exciting, readable and immersive.
At the same time, manufacturers increasingly introduce longer 3-inch flippers instead of the older short 2-inch versions.
These longer flippers allow better ball control.
Techniques such as ball trapping, controlled passing and accurate shooting become much easier.
This makes gameplay more precise, tactical and player-friendly.
Longer flippers go on to define modern pinball gameplay.
An early and important example is “Hayburners II” by Williams (1968).
It is widely credited as the first known machine with 3-inch “King-Size” flippers.