I want an exit button, but don't want it to be a regular arcade button that can be easily pressed by accident.
I am going to use a momentary three Position switch with automatic return to center and two NO (normally open) contacts.
The switch lever is a knob type so it must be turned to activate, thus avoiding accidental exits.
It will be placed at the center of the panel between the P1 and P2 buttons.
The controls will be turn left for ESC - release to center for neutral - turn right for Pause
I didn't really want a pause button, but some of you recommend it so I thought to try it.
I could see someone cranking the knob to the right to Pause and then cranking it left to UN-Pause, but that would be EXIT instead.

I think I will just make both directions ESC, so the switch will be a dedicated exit button. There is no pause in arcades.

The switch looks like this:


I have ordered them. Will see how they look/work when they get here.