Bally : Double Up

Game Parameters
Game Type mystic lines
Game Number 924
Manufacture Date 1971
Number of Holes 20
Number of Odds Steps 10
Max Payout 2400
Max Extra Balls 3
Features
Resources
Backglass
 - bg 1
 - bg 2

Cabinet
 - front
 - right side

Flyers
 - fly 1

Internals
 - back door (lowres)
 - inside head (lowres)

Game Manual
 - manual (pdf) : 11.44MB
 - unoptimized manual (pdf) : 101.68MB

Mixer Diagrams
 - 1: w-1065-8b
 - 1: w-1065-8b (svg file)
 - 2: w-871-6b
 - 2: w-871-6b (svg file)
 - 3: w-1059-8b
 - 3: w-1059-8b (svg file)
 - 4: w-872-4b
 - 4: w-872-4b (svg file)
 - 5: w-1076-7b
 - 5: w-1076-7b (svg file)

Playfield
 - pf 1

Reflex Diagrams
 - w-891-7b

Schematic
 - schematic : 16.83MB

S/I Card Scan
 - siscan


Double Up

Double Up removed the special game that was the only changing feature on the last few Mystic Lines machines, and instead toyed a feature that was standard on all these game types - the score multiplier.

The first Mystic Lines machine, Border Beauty, offered double scoring in one or more of the four color zones on the bingo card. The rest of the games offered double/triple scoring. Double Up introduced 1/2X to 4X scoring, but it was under player control.

Before shooting the third ball, the player could chose a color to double score using a button on the foot rail. One of the other colors would drop to "one half".

Double-double was a little harder. The easiest way to get this lit was to to be playing a red letter game. When a red letter game started, one or more of the colors would start at double. The button on the foot rail could be used to advance these colors to "double double", which created the highest possible single payout of any bingo machine.

It's also possible to have a color double during spin cycling. Using the blue button gave you a better chanced of this happening, but it's still infrequent.

mystic lines games

First appearing on Border Beauty, this new game type took the section scoring idea from the magic screen games and got rid of the in-line scoring that had been on every bingo up until now.

While they were at it, they removed five holes from the playfield, and decided four colors (red/yellow/green/blue) were better than three.

Mystic Line Home Position Mystic Line Winner

The nasty trick was that one number in each color group was white with a corresponding colored star. That number counted as the fifth number in the color only, otherwise it only counted as a lit star. (e.g. the four blue lit plus the blue star would pay 5-in-blue. Two blue lit plus the blue star is worth nothing).

So you really have five balls and you have to get at least three out of four in the color to win.

Unlike the magic screen games, the color sections were stationary and you moved the numbers behind the metal panel that had the color pattern painted on it.

The main card is 4x5 (four rows, five columns). The center column was a Magic Line - it could be moved up or down one position. The two columns on the left could be swapped with themselves, and so could the two columns on the right.

Keeping in mind the popularity of the OK game feature, they added this as a standard item on almost all mystic line games, and called it the Red Letter Feature. 3 or 2 balls in the star numbers would award the red letter game.

In addition, all mystic line games had a 3 or 4 star numbers score some fixed number of credits.

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