Kings and Queens was one of the very first 2" flipper games I played, when I attended my second ever pinball tournament 6 years ago, along with that event being my introduction to EMs in general. Being an 80's-born kid, EMs were before my time, and I never got to see them on location. K&Q was by far out of the 15 or so games that I played, my favorite. So much so, that if I get around to doing a second fully custom machine, I want to use a similar ball-walker mechanic for my physical locks. Slick Chick I didn't get to play until much later, but that game as well is the pinnacle of pop bumper mechanics. Uncomplicated and just a ton of fun to play.