Gee. If Flashback was in a basement on Swanson St (now Arthur Daley's $2 shop), and the place on Bourke St opposite the cinemas was Timezone, I'm getting old! I could have sworn Flashback was the multi level place on the south side of Bourke St (apparently Timezone).
The other place on Elizabeth St was opposite the GPO I believe. But it my memory is that bad, then it could have been near the Vic Market
Strangeways: Where was Fiorentinos?
PS.
The last of the old arcades, a video only arcade on the north side of Bourke Street between Russell and Swanson Streets, closed down about two months ago. See what happens when you don't have pinball!!