When playing a woodrail, almost any ball that exceeds 35 seconds is satisfying. But part of the charm of some of them is discovering a sequence not readily apparent from the score card/rule sheet.
Gottlieb's 1950 Rockettes, has 4 kickout holes in the middle of the playfield spaced about 4" apart. The kickout holes kick in unison in the same direction, advancing the ball to the next hole. They change direction with each step of the 10,000 points unit or by either of two rollover buttons. Unlike a game such as Kings and Queens, or Melody/Sing Along/Pleasure Isle, etc., where the kick out holes are close to one another, the kickouts on Rockettes are far enough apart that the ball doesn't necessarily get advanced into the next hole when activated. That is, the ball is "launched" and may or may not make it into the next hole...
If ball lands in the bottom hole when lit for 500,000 points, and if the holes are set to kick upward, then each hole takes turns being worth 500,000 points, making the advancing ball score 2 million points across the four holes.
I will share that I have had this game for several years and have not, ever, scored the 2 million point shot while playing. (I do know that it works when the glass is off, and even then, the ball doesn't always jump into the next hole...). The best that I legitimately scored was 1.5 million and that was satisfying.