Bally's Circus Queen is a magic screen game with an unusual feature:
three balls in the orange section, when the feature is lit, will score as three in the green!
This was the first game with dedicated blue section scoring.  This allows for 3 or 2 in the blue section to score 300 or 600 replays.
Triple deck scoring, an extended time tree with the rollovers, and the OK game round out the package.