The iconic game Missile Command used a 4.5" trackball and it's an integral and necessary part of the game.
Learn a bit about them (from the world champion) here: https://arcadeblogger.com/2016/07/29/the-secret-history-of-the-arcade-trackball/
This ball has 8 times the rotational inertia of a standard 3" arcade ball, which is why a 3" doesn't come at all close to reproducing the feel of the original.
At the moment this Trackball is only available to Arcade Machine customers.
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