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John Robison

John  Robison
John Robison is an expert on slot machines and how to play them. John is a slot and video poker columnist and has written for many of gaming's leading publications. Hear John on "The Good Times Radio Gaming Show," broadcast from Memphis on KXIQ 1180AM Friday afternoons. You can listen to archives of the show online anytime.

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Ask the slot expert

20 Dec 2010

By John Robison

John,

This is a follow on question to "How does a slot machine use the numbers from the RNG?"

Could you provide the outcome table for the example you gave? I.e., is the example a penny, quarter, dollar, etc. machine, and what are the possible outcomes -- $20 for a cherry, $100 for three 7s, $1,000 for three triple bars, etc., for example. My objective to learn by this example to map other denomination machines and outcomes.

Thank you,
David

Dear David,

It took me a while to find the article to which I think you're referring. I think it's this golden oldie from August 11, 2008 (https://www.casinocitytimes.com/john-robison/article/how-does-a-slot-machine-use-the-numbers-from-the-rng-43118.

First question: Denomination. Answer: Irrelevant. The reel strip listing and virtual reel layout in my example can be used for any denomination.

Second question: How much are the combinations worth? The usual Double Diamond payoffs (800 for Double Diamond, 80 for 7s, 40 for triple bars, 25 for double bars, 10 for single bars, 5 for mixed bars and 2 for a cherry).

Main question: Outcome table. I don't know what you mean by "outcome table." And I don't know how you plan to "map other denomination machines and outcomes." We can't see the value of the RNG for a spin. And even if we could see the value, we don't know the process used to convert the value from the RNG to a virtual stop number. It might be simple modulo arithmetic. It might be something more complicated. Moreover, what would we do with the virtual stop number? We don't have access to the virtual reel layout table, so we don't know what physical stop is mapped to the virtual stop.

The casinos and slot manufacturers don't make the data that I think you're looking for generally available for the machines.

Best of luck in and out of the casinos,
John


Send your slot and video poker questions to John Robison, Slot Expert, at slotexpert@comcast.net. Because of the volume of mail I receive, I regret that I can't reply to every question.

This article is provided by the Frank Scoblete Network. Melissa A. Kaplan is the network's managing editor. If you would like to use this article on your website, please contact Casino City Press, the exclusive web syndication outlet for the Frank Scoblete Network. To contact Frank, please e-mail him at fscobe@optonline.net.

 
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