Bally : Bikini

Game Parameters
Game Type magic screen
Game Number 674
Manufacture Date 1961
Number of Holes 25
Number of Odds Steps 8
Max Payout 600
Max Extra Balls 3
 - chris dade image
 - bg 1

 - cab 1
 - cab 2
 - cab 3

 - fly 1

 - int 1
 - int 2
 - int 3
 - int 4
 - int 5

Game Manual
 - manual (pdf) : 10.09MB
 - unoptimized manual (pdf) : 61.42MB

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

 - chris dade image
 - pf 1
 - pf 2

Reflex Diagrams
 - w-770b

 - schematic : 6.42MB

S/I Card Reproduction
 - sirepro

S/I Card Scan
 - siscan 1

Timing Diagrams
 - timing 1
 - timing 2


Let's get back to the Magic Screen games we left behind with Circus Queen.

Bikini is a Circus Queen with one critical difference that make this game and Lido the best bingo games to have for home use (in my opinion, of course).

And the difference is - Futurity!

The one inconvenience with OK/red letter games is that they require you to have the current game scores at pretty high levels for the next-game given by the OK feature to really be good. Futurity changes this by letting you accumulate your OK games and then use them at a later time of your choosing for one big OK game.

The best OK game you could get was when the futurity level was at 12. While playing any game that had the OK feature lit, you could increment the futurity level 1,2,3,5,9, or all 12 for an orange section win. The amount was indicated by a panel on the backglass, and was directly tied to the green odds level.

So why is this so good for home use? Well, how often will you sit there and play the hundred or more coins/credits that you'd typically need to get the green odds to maximum? After the first time, probably never. But accumulating your way up to a level 12 futurity game slowly will happen for you since the count does not reset when you turn off/on the game.

One oddity of Bikini is the series connection of the #1 feature advance lamp with the green 4,6,8 score lamps and putting those lamps on the 17V circuit with a resistor. There should be paper tags on the lamp panel that say to use #47 lamps in the futurity advance and the first three green score spots, while the rest of the 6V lamps were #55s.

If you wanted to change all the #55's to #47's for heat reduction, you'd need to add a little more resistance in the circuit to get the special #47's dimmed down to match. The current resistor value makes the #47's match the brighter #55's, so changing the resistor or adding another one in series is needed....probably around 30 ohms.

See the internals pictures provided by Terry Knapper. This design was dropped in the follow-on game Lido.

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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