There's a recently unboxed ac/dc premium in Garden Grove at Bart's Pub.
Fullerton has a comic shop called Comic Hero University with some good playing machines.... Creature, Doctor Who, Gorgar, sttng, BoP.
Pinball Forever in Santa Ana has about 50 pinball machines, they recently started opening again. Good place to play lots of different classic games you don't see often.
The pinball maps websites are good for finding locations everywhere.