Bally : Roller Derby

Game Parameters
Game Type magic screen
Game Number 654
Manufacture Date 1960
Number of Holes 25
Number of Odds Steps 8
Max Payout 600
Max Extra Balls 3
 - chris dade image
 - bg 1
 - bg 2
 - bg 3

 - cab 1
 - cab 2
 - cab 3
 - cab 4

 - fly 1

 - int 1
 - int 2
 - int 3
 - int 4
 - int 5
 - int 6
 - int 7
 - int 8
 - int 9

Game Manual
 - manual (pdf) : 8.85MB
 - unoptimized manual (pdf) : 52.95MB

 - trip bank label

Mixer Diagrams
 - 1: w-936b
 - 2: w-907-1b
 - 2: w-907-1b (svg file)
 - 3: w-935b
 - 4: w-937b

 - pf 1
 - pf 2

Reflex Diagrams
 - w-770b

 - schematic : 10.54MB

S/I Card Scan
 - siscan

Timing Diagrams
 - timer replay
 - timer replay (svg file)

Roller Derby

After disappearing for years, pick-a-play buttons are back! On the front of the machine are red, green, blue, and yellow buttons.

Yellow is used for extra balls, like on most previous games. Similarly, red is used to attempt to increase the scores and features.

Blue, however, only attempts to increase the scores. Internally, the circuitry is such that if you play the blue button, you have a better chance of scores increasing, the scores have a better chance of jumping up in more than one-level increments, and the possible number of levels in the jump goes up to three.

Green button play focuses only on features. Like the blue button, your chances are better that features will light, and for things like the number of active screen sections, your odds of more of them lighting at once increases.

Pick-a-play lets you decide how you like to play...want more features but lower payouts - use the green button. Want maximum payouts and forget the features - use the blue. Want both - use the red.

magic screen games

First introduced in Carnival Queen, the numbers on the card are stationary, but a moving metal screen is slid across them.

The screen has in-line scoring and irregularly shaped colored section scoring. In the sections, rather than needing 3,4,or 5-in-line, you can get 3,4, or 5-in-section to score. While some sections have numbers that are in a line, to win in a section, the lit numbers DO NOT need to be adjacent!

Screen Home Position Screen Position B Screen Position E Screen Position G

In the screen home position, the standard three color in-line scoring is available. As the screen is slid left, the in-line scoring is replaced with section scoring. At position B, the scoring is a combination of both methods. By position E, in-line scoring is gone completely.

Also notice how in position B, the green diagonal is now over three numbers that could not be a diagonal winner on the screen in the home position, but only three numbers are in the diagonal line!

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