I know there was. About a year and a half ago a fellow was selling several games and misc lights chairs etc at an old nightclub that had closed down. His prices were high and he didn't want to plug anything in. There were the usual games - Ms Pac, Space Invaders, Armor Attack etc. There were 2 games I was interested in Zoo Keeper and a Space Demon upright. I had never seen a Space Demon, it had a dedicated marquee, bezel and control panel. The cp looked similar to radarscope the way the buttons were. It was raining and I can only take one game in the pickup with a canopy so I picked up the Zoo Keeper.
I never saw the guy selling games again and for all I know there are still some in the building. - Barry