New Upcoming Release

It’s been a while since our last posting.  But, we will be releasing our newest slot offering in the next few weeks.  See our facebook page for more information.  The new product will be a feature packed game that will raise the bar once again.  The Wonderful Wizard of OZ was a tough product to top!  Thanks for the great feedback on that and our other products.

More news soon!


Wizard of Oz

It’s been quite a while since our last post.  We’ve been very busy!

This week we released our most ambitious product to date:  “The Wonderful Wizard of Oz Slot Machine“, available now in the Amazon App store, Google Play Market and for iOS in the iTunes store.

The Wonderful Wizard of OZ Slot Machine – Google Play

The movie “The Wizard of Oz” came out in 1939.  It is one of the most watched movies ever.  In doing research for our newest game “The Wonderful Wizard of Oz Slot Machine”, we read the book which was written by L. Frank Baum.  Unlike most of today’s movies that were based on a book, the movie “The Wizard of Oz” follows the book almost in it’s entirety.

Our newest game brings slot players all the magic of the original story.  I think you will find that we have done our research well and our game brings the original story back to life.

We will post an update with screen shots, links, and trivia in the next few days.


Tarzan and Jane Slot Machine – Review

Had a chance to play Aristocrats “Tarzan and Jane” slot machine while in Las Vegas last week.

I only have time for a short review, but suffice it to say its a very fun and addictive game.  Combining two simultaneous 5×3 slot games, 243 ways to pay on each is great enough.  Scatter triggers (for the wheel) can trigger when combined between the two slot games.  Also, there are times when the two games combine to form wins.

Some of the more interesting interaction occurs when Tarzan wrestles with the ape.  The top reel set can get turned sideways and then combined with the lower reels for big pays.  The other bonuses are free spins and a wheel bonus.  Overall, this game is a hit!

We are kicking around the idea of producing a similar game for the ipad, Kindle, Nook, and Android sometime next year.  We would like to hear feedback from you on this. If this is your first visit here, be sure to checkout our current catalog of products on our main website:


Lost City of Gold Slot Machine

Wow.  Hard to believe it’s been this long since our last post.  Development of our New Orleans slot machine app has been put on hold until next year 2013 in hopes of coming out in time for Mardi Gras!

But, to the good news!  We will be releasing our latest slot machine app for the iPad, iPhone, Kindle Fire, Nook, and Android in the next 2-3 weeks.

“Lost City of Gold Slot Machine” is an Aztec themed slot machine app that features stacked symbols and “bet a reel” gameplay.  Featuring two distinct bonus games:  Wheel of Riches and the City of Gold Temple Pyramid Bonus.  This is our first slot app that features both a wheel bonus and a picking bonus game.

Graphics, sound, and math are all up to our industry setting standards.  We have built up a considerable fan base over the past year and would like to thank our supporters for a great year.  We think you will agree that the “Lost City of Gold Slot Machine” is our best product so far.

We will be posting screenshots and teasers in the next few days on this blog.

Stay Tuned!


The Best Slot Machine – “Buffalo Gold” released for Nook Color this April 26th!

Our best selling slot machine “Buffalo Gold” releases in the Barnes and Noble store this April 26th!

We received approval last week from the Barnes and Noble store.  Experience the best slot machine app on the Nook Tablet and Nook Color devices.

Our fans have the following to say about Buffalo Gold:

“I love going to casino’s and playing this game. This is so much like the orginal, it’s like going to a casino everyday and not spending any $$. The graphics and bonus games are excellent.”

“This is a nice game if you like slots but the bonus rounds don’t always pay well.
It would be nice if the game gave you the option to increase the bet more than two bucks. I have to say though after playing this game I wanted to play it at the casino and when I did I won $496.00 ”

“This is a favorite at the casino..great app. Downloaded another app called Royal??this A.M. and deleted it at three. If you like a good slot machine or reel give this one a try. Can have some big wins but you have to work for them…just like casinos ”

“great game and the graphics are spectacular. wish they had different bonus games….the 3d is very clear and the coins are good ”

“My wife says she really enjoys this edition. It is just like the one they have in the casinos, except it does not take real money. They only down fall is you can not change denominations. Installs and plays easy.”

Our Games and Website


The importance of Random Numbers – The RNG

It’s been a while since our last blog posting.  We’ve been busy at work creating our latest slot game “Jokers Crown Video Slot Machine” for iPhone/iPad, Kindle Fire, Nook, and Android devices.

Random Number Streams for Casino Games:

In casino games, the random number generator or (RNG) for short is the basis for all casino game payouts. An ideal RNG would not repeat a particular number sequence for a long time. All RNG’s are computer algorithms that are really “pseudo random” in nature. Everything in a computer is deterministic. It is predictable.

A valid (although not legal for gaming) random number generator can simply be a long list of numbers stored in an list. If the length of numbers were sufficiently large and the pattern of numbers didn’t repeat, and all numbers were covered you could use this to sort cards for a card game or set reel stop positions on a slot machine. When you needed a new result (card or reel stop) you would grab the next number in the list. One important thing to note is that if you start at the same position in the list each time, you will get the same result. Also, if you reached the end of the list and started again from the beginning, you’d get the same reel stops (wins) or card hands. If we used this method and you were clever (had seen all the results that were played before wrapping around) you could figure out what the next win (or loss) would be given the current reel stops or cards dealt.

In RNG terminology, the index into the random number sequence is called the “seed”. Again if you start from the same seed you will get the same set of random numbers.

What is used in gaming is a very long sequence (before repeating) random number stream based on shifting bits and performing a binary mathematical operation called an “exclusive or” on or between multiple cpu registers. The long length is desirable for awarding large payout progressives awards. If the sequence was too small it’s possible the progressive would be impossible to hit as the set of stops required to hit the progressive would not exist in the stream at all. RNG’s are analyzed using simulation to make sure the odds are what they claim they are and that it is both fair to the customer and the casino.

There are events in life that are seemingly random (meeting people, car accidents, etc). Philosophers debate about the concept of “free will” or if everything is based on“fate”. The cpu on a computer is fully understandable and non-random. The fundamental core of any cpu is the transistor which is a simple electrical gate. Each state is represented as a voltage (0v and 5v). 0 volts represents false (or zero) and 5 volts represents true (or 1).  This simple gate and related digital logic, low level programming languages, then higher level programming languages, internet, and now the blur of the go anywhere computer and cloud give the illusion of free will on the computer.

When you walk up to a slot or video poker machine at a casino, you have no way of knowing where it is in the stream of numbers. Also, since the stream is so large, a large payout doesn’t necessarily imply that another high pay couldn’t happen soon after.  If you could peer into the stream and look at it from afar and looked at it from left to right, you could paint areas where the stream is hot and areas in the stream that are cold.  The “hot” or “coldness” would be different for each slot game as the specific reel stops that map to wins are different on each slot game.  In the end, this is where the Luck exists and is one of the key components in the fun a player experiences.

There are a lot of technical details that I left out of this article which deal with the finer details of randomness tests, number distribution, etc. If you are interested in more details, feel free to post a question to this blog or send us an email at We’ll post a follow up article soon on the relationship between RNG, slot machine paytables, volatility and fun.


Great World Games releases “Buffalo Gold Slot Game” app to the iTunes and Amazon app store

We are proud to announce the release of our second video slot game app titled “Buffalo Gold Slot Game” to the iTunes and Amazon App Stores.

“Buffalo Gold” is a Western-themed, 5×4 video slot game featuring bet-able reels that allow over 1,000 ways to pay. You can bet up to 5 credits per reel which yields a maximum total bet of 200 credits.

The bonus game with stacked Buffalo symbols, free spin re-triggers, and Wild Wild Multipliers pays out with aggressive volatility. All of our games use real math and true industry-standard random number generation for maximum Las Vegas excitement. Priced at less than one “max bet spin” at your local casino slot machine, you will truly enjoy the exciting experience offered by this game. This is a follow-up game to the wildly successful slot game “King’s Tomb Video Slot Machine”, which is also available in the iTunes store.

This game has been optimized for iPad, iPhone 4 and other Retina display devices as well as the Kindle Fire, Samsung Galaxy, HTC Evo, and other high end Android devices.

Stay Tuned for more info!