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Introduction
Slot Bingo appears to be a pick-15 keno game. The game is made by SmartSoft Gaming, a provider of games for Internet casinos. As I show below, the game does not follow the natural odds of a fair keno.
After confronting SmartSoft with my analysis, they quickly removed the game.
Rules
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- The player may play 1 to 8 cards at a time.
- Each card is marked with 15 random numbers, without replacement, from 1 to 80. The player may not choose his own numbers. The cards change after every game.
- After a bet is made, the game will draw 20 random balls, numbered 1 to 80, without replacement.
- If a ball drawn by the game matches a number on any card played, then it is marked on the card and it known as a 'catch.'
- Each card wins according to the number of catches and the pay table below.
Slot Bingo Pay Table
| Catch | Pays |
|---|---|
| 15 | 10000 |
| 14 | 1000 |
| 13 | 800 |
| 12 | 500 |
| 11 | 400 |
| 10 | 200 |
| 9 | 100 |
| 8 | 50 |
| 7 | 40 |
| 6 | 20 |
| 5 | 10 |
| 4 | 5 |
| 3 | 4 |
| 2 | 2 |
| 1 | 0 |
| 0 | 0 |
Analysis
The following table shows the expected return, assuming the balls are drawn fairly. Pays are on a 'for one' basis.
Slot Bingo Return Table
| Catch | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 15 | 10000 | 15,504 | 0.000000 | 0.000000 |
| 14 | 1000 | 2,325,600 | 0.000000 | 0.000000 |
| 13 | 800 | 137,210,400 | 0.000000 | 0.000017 |
| 12 | 500 | 4,310,693,400 | 0.000001 | 0.000325 |
| 11 | 400 | 81,903,174,600 | 0.000012 | 0.004937 |
| 10 | 200 | 1,009,047,111,072 | 0.000152 | 0.030412 |
| 9 | 100 | 8,408,725,925,600 | 0.001267 | 0.126716 |
| 8 | 50 | 48,650,485,712,400 | 0.007331 | 0.366572 |
| 7 | 40 | 198,344,287,904,400 | 0.029890 | 1.195589 |
| 6 | 20 | 572,994,609,501,600 | 0.086348 | 1.726962 |
| 5 | 10 | 1,168,909,003,383,260 | 0.176150 | 1.761501 |
| 4 | 5 | 1,660,382,107,078,500 | 0.250213 | 1.251066 |
| 3 | 4 | 1,595,269,083,271,500 | 0.240401 | 0.961604 |
| 2 | 2 | 981,704,051,244,000 | 0.147939 | 0.295878 |
| 1 | 0 | 346,917,972,996,000 | 0.052279 | 0.000000 |
| 0 | 0 | 53,194,089,192,720 | 0.008016 | 0.000000 |
| Total | 6,635,869,816,740,560 | 1.000000 | 7.721578 |
The lower right cell shows an expected return of 772%!
Experiment
A return of 772% seemed too good to be true, so I played the free game at the SmartSoft web site. I found the average number of catches to be ridiculously low. So I recorded 20 consecutive games for more careful analysis. The following video shows those 20 games.
The next table shows the number of catches on each card in each game.
Total Catches by Game and Card
| Game | Card 1 | Card 2 | Card 3 | Card 4 | Card 5 | Card 6 | Card 7 | Card 8 | Total |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 2 | 1 | 1 | 1 | 2 | 2 | 13 |
| 2 | 1 | 2 | 0 | 2 | 1 | 3 | 2 | 1 | 12 |
| 3 | 1 | 0 | 2 | 0 | 1 | 0 | 3 | 1 | 8 |
| 4 | 2 | 2 | 1 | 0 | 1 | 1 | 2 | 1 | 10 |
| 5 | 2 | 0 | 1 | 2 | 2 | 0 | 1 | 0 | 8 |
| 6 | 1 | 0 | 0 | 1 | 2 | 1 | 3 | 1 | 9 |
| 7 | 1 | 0 | 1 | 2 | 2 | 1 | 0 | 2 | 9 |
| 8 | 3 | 2 | 0 | 2 | 1 | 1 | 0 | 2 | 11 |
| 9 | 1 | 0 | 0 | 1 | 0 | 0 | 3 | 3 | 8 |
| 10 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 4 |
| 11 | 2 | 1 | 1 | 2 | 4 | 1 | 1 | 0 | 12 |
| 12 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 6 |
| 13 | 1 | 0 | 2 | 3 | 1 | 3 | 1 | 0 | 11 |
| 14 | 0 | 0 | 1 | 0 | 1 | 0 | 3 | 4 | 9 |
| 15 | 1 | 0 | 4 | 3 | 2 | 2 | 1 | 3 | 16 |
| 16 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 0 | 11 |
| 17 | 2 | 2 | 1 | 3 | 2 | 1 | 0 | 1 | 12 |
| 18 | 0 | 2 | 0 | 1 | 0 | 0 | 1 | 2 | 6 |
| 19 | 0 | 2 | 0 | 0 | 1 | 1 | 0 | 2 | 6 |
| 20 | 0 | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 6 |
| Total | 23 | 20 | 19 | 24 | 28 | 20 | 27 | 26 | 187 |
The lower right cell shows a total of 187 catches.
In 20 fair games of 8 cards each with 15 numbers per card, the expected number of catches would be 20 × 8 × 15 × (20/80) = 600.
My results were 600-187 = 413 catches short of expectations.
The standard deviation of the total catches in 20 games is sqrt(20*8*15*(1/4)*(3/4)) = 10.606602.
This makes my results 413/10.606602 = 38.938013 standard deviations short of expectations.
In a fair game, the probability of 187 catches of less would be 1 in some number with about 330 digits. To put that in perspective, that would be like the chances of buying 39 random Powerball lottery tickets (each has a chance of winning of 1 in 292,201,338) and winning on all 39 of them.
You may be wondering if the game discloses that the ball draw is not fair. It does not that I can find. If you click the question mark in the game nothing happens.
It is easy to conclude either the cards or the ball draw is not random. I don't know exactly how they are doing it, but the numbers that appear least on the player cards are the most likely to be drawn.
Update
After giving SmartSoft Gaming an opportunity to respond to this page, they replied that Slot Bingo was a work in progress and not available for actual casino use. Furthermore, they indicated it was not a good idea to have incomplete games on their web site, which I see they removed.
I would like to commend SmartSoft for doing the right thing and removing the game.
Written by:Michael ShacklefordThe Gamesys sites include more than 13 casinos such as Starspins, Jackpotjoy, Virgin Games, Heart Bingo, MONOPOLY Casino, Vera & John, InterCasino, Rainbow Riches Casino, Smooth Bingo, Virgin Bet, Womans Bingo, Tropicana and many others.
Profitable Play N.V, a subsidiary of Gamesys Group Plc operates all the Gamesys bingo and casino sites.View offers!Who operates the Gamesys casinos?
The Gamesys casino sites operate with a license provided by the UK Gambling Commission with reference number 38905 with no sanctions recorded so far for any of its brands.
The Gamesys Group plc. has offices in London however the company's recorded location is in Gibraltar: Suite 2, Floor 4, Waterport Place, Gibraltar, GX11 1AA.
The following are the main features that the Gamesys sites offer to UK players:
We advice you to make use of the safer gambling tools that are available at the casinos from the Gamesys Group. We encourage you to set deposit limits and take breaks from gambling. For more details please visit this Safer Gambling Tips page.
Gamesys Sites 2021
ContentsGamesys Sites 2021New Bingo Slot Sites
- Heart Bingo – Best Gamesys bingo site with free games.
- Starspins – The top Gamesys site full of progressives.
- Virgin Games – Best Gamesys sites with poker.
- Jackpotjoy – Largest Gamesys casino with bingo.
- MONOPOLY Casino – Top Gamesys casino with Monopoly games.
- Vera & John – Gamesys site with Slingo Games.
- InterCasino – A site with Slingo Originals & jackpots.
- Rainbow Riches Casino – Themed Gamesys site with free games.
- Smooth Bingo – Daily free bingo site with slots.
- Virgin Casino – Premium USA Gamesys site.
- Tropicana Casino – US Gamesys site with 150+ slots.
- Botemania – Best bingo site for Spanish players.
- Canal Bingo – Fun Spanish Gamesys bingo site.
Heart Bingo – Best Gamesys bingo site with free games.
Heart Bingo is the winner of the ‘Best Mobile Bingo Site' and designed for players looking for a modern bingo experience with friendly community.
Heart Bingo is one of our favourite Gamesys sites for playing bingo and slots from Gamesys and the top software developers like IGT, WMS, Barcrest and now Microgaming.
At this top Gamesys sites you'll find daily free bingo games, and lots of bingo tournaments and games taking place all day. Most bingo games here cost £0.10-£0.50 but they have very attractive guaranteed Jackpots up for grabs.
It's powered by Gamesys, this entertaining site offers players a range of bingo games and popular slot games such as Tiki Island, Double Bubble and The X Factor slot plus some attractive progressive Jackpot slot games like Diamond Bonanza and Tycoon Progressive with thousands of pounds in cash prizes.
Classic slots from Gamesys such as Double Bubble slot, Tiki Island slots, Winstones, Peggle slots, Rainbow Riches slots and Fluffy Favourites slots are here to stay. But there are fresh games almost every month and some Progressive Jackpots games with prizes in the six-figure mark.
Starspins – The top Gamesys site full of progressives.
Starspins casino launched in 2012 as a slots-only Gamesys-owned casino brand featuring the Star & Community jackpots which gives players more ways to win.
Second in our list of Gamesys sites is a casino that's famous for offering mainly online slots and four different progressive Jackpots up for grabs on any given spin.
Powered by Gamesys and now offering slots from WMS, IGT, Novomatic and Microgaming, Starspins casino a gaming site that's actually more of a slots site.
Of all the Gamesys casinos, this is the best gaming site to play any of the top slot games. Why? There's a 95% RTP guaranteed across all games and 4 progressive jackpots to be won on any spin on any game.
There are so many fun slots to play from Gamesys, IGT, NetEnt, WMS and more. And with such a high payout and multiplier progressives, why you play somewhere else?
Virgin Games – Best Gamesys sites with poker.
Virgin Games is one of the earliest online casinos to set up shop in the world. Originally, Virgin Games was established and operated by the Virgin Group which is part of the wider Sir Richard Branson’s Virgin Enterprises.
During its time under the Virgin Group, Virgin Games predominantly offered online gambling services to players based in the United Kingdom.
The site has grown since its beginning and it features some of the best video slot games in the industry. Speaking of video slot games Virgin Games offers Da Vinci Diamonds slot, OMG Kittens, Chuzzle slots, Wizard of Oz slot, Fortune Temple, Golden Goddess, Pixies of the Forest and many, many more.
The mix includes games from Gamesys, IGT, NetEnt and WMS. Virgin Games is one of the most trusted brands in the UK and this same level of quality shows across the whole casino experience.
Jackpotjoy – Largest Gamesys casino with bingo.
Live since 2002 and winner of the ‘Best Bingo Site' award, Jackpotjoy casino is the top Gamesys bingo site that has made more winners than anyone else.
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Jackpotjoy Bingo is actually what comes to my mind when I think of Gamesys bingo sites. It's very well known in the UK and it offers great bingo games some of which are themed based on the most popular games like the Tiki Bingo.
Britain's Biggest Selection Of Jackpot Games For Pennies! With over 15 different jackpots to choose from, Jackpotjoy has one of the biggest arrays of money maker games in the UK.
Bets start at 5p for a chance to win big. When we say “win big” we are not just saying stuff, a portion of all bets are added to the jackpot fund and the piggy bank continues to grow until a lucky player hits Big Bertha.
As you'd expect from any of the Gamesys sites, there's a large selection of bingo games with different buy-in amounts and HUGE guaranteed prizes and fun chats.
It offers classic and multiline slot machines, Instant Win games, Scratchcards, casino games and unknown to many, even lottery games!
MONOPOLY Casino – Top Gamesys casino with Monopoly games.
Monopoly Casino is a relatively new online casino that opened its doors for the very first time in May of 2016.
As can be deduced from the title of the casino, this online casino primarily focused on rolling out monopoly themed casino games some of which include Monopoly on the Money, Monopoly Bring the House Down, Monopoly Epic 2 slot, Monopoly Roulette Hot Properties and Monopoly Roulette Tycoon among many others.
With time, however, Monopoly Casino decided to diversify its products and as such, started rolling out other casino games including non-monopoly themed slots as well as table and card games.
This UK Gamesys casino site is safe for players as it holds valid operating licenses from the UK Gambling Commission as well as the Government of Gibraltar.
The MONOPOLY Casino sister sites have become very sought-out and the site is fully optimized for mobile play meaning that all games offered at this online casino can be accessed as well as played on mobile devices.
Vera & John – Gamesys site with Slingo Games.
The adventure at Vera & John begins with a match-up bonus, and the gaming journey goes through an excellent selection of slot games, incredible promotions, and a highly fruitful VIP program.
At this Gamesys site, you will find more than a thousand slot games. With such a vast collection of games, you will definitely find something to play. Some of the prominent slot titles here include Starz Megaways, Lightning Joker, Rally 4 Riches, Arcane Gems Night Queen, and Bonus Bunnies.The casino also has Slingo games on display. There is a total of 14 Slingo titles available, some of which are Slingo Classic, Slingo Who Wants to Be A Millionaire, Slingo Monopoly, Slingo Carnival, and Wheely Wheely Big Win.InterCasino – A site with Slingo Originals & jackpots.
InterCasino aims to provide a quality gaming experience to its players and make their time worthwhile. It offers daily jackpots, slots, tables, and Slingo games along with extremely tempting promotions.
InterCasino features daily jackpots from Microgaming, Play’nGo, and Yggdrasil Gaming. Some of the Jackpot titles available here are Joker Millions, Empire Fortune, Mega Moolah, King Cashalot, Treasure Nile, Bell of Fortune, 7 Sins, and Clout Quest.This Gamesys site holds bonus cash tournaments. These tournaments allow players to play their favorite slots and table games and climb the leaderboard after each win to aim for different bonus cash prizes. The total prize money for a tournament is €4,000/month.Rainbow Riches Casino – Themed Gamesys site with free games.
In addition to all the Rainbow Riches games, you will find a wide variety of reel slots, casino, bingo, and poker games at Rainbow Riches Casino.
Rainbow Riches has Live Casino Games on the menu as well. The high definition graphics and real-life dealers will take you to a whole new level of casino gaming. Some of the Live Casino games that you are going to find here are Roulette Live, Three Card Poker Live, Blackjack Live, Lightning Roulette, Dream Catcher, and more.This Gamesys site also features Poker Games. You can win up to a massive £100,000 by playing Wild Seat Poker games. You can also take part in No-Limit Texas Hold’Em tournaments from just £1.Smooth Bingo – Daily free bingo site with slots.
Smooth Bingo offers exclusive bonuses, free spins, excellent bingo rooms, top-notch bingo side games, appealing promos, and much more.
This Gamesys site presents slots from Gamesys, NetEnt, Barcrest, and IGT. The slots menu includes games like Starburst, Cleopatra, Rainbow Riches, Double Bubble, and more.Slot Bingo Sites Free
Smooth Bingo has irresistible promotions on display. Refer Smooth Bingo to a friend and get £20 when he joins and plays his first £10 at the casino. The casino also features a leaderboard, and upon taking part in it, you get to win a cash prize that goes up to £1000 a week. To climb in the leaderboard, you have to be in the top 10 players who have hit the highest in-game Multipliers.Virgin Casino – Premium USA Gamesys site.
Virgin Casino is known for providing high-quality slots and Bingo Games to its user, and with the touch of daily free games and free spins, this Gamesys site becomes one of the best casinos on the Internet.
Virgin Casino has casino games from IGT, NetEnt, Barcrest, WMS, ASh Gaming, Evolution Gaming, EYECOn, Microgaming, Novomatic, Red Tiger Gaming, Gamesys, Ash Gaming, Random Logic Software, Bally Technologies, SG Interactive, High 5 Games and Shuffle Master. This gives Virgin Casino a very versatile gaming library.The minimum amount that can be deposited and withdrawn at Virgin Casino is $10. In order to transfer funds, you can use Skrill, Neteller, VISA, Mastercard, and Instant Bank Transfer.Tropicana Casino – US Gamesys site with 150+ slots.
This Gamesys site has a multitude of slots and casino games on the show with almost limitless bonuses and promos.
Tropicana Casino has more than 150 slot games on display. Some of the slot titles available at this casino are Racing Rhino, Mystery Wilds, Baywatch, Bubble Craze, Cash Spin, Cool Jewels, Coins of Egypt, Day of the Dead and Double Stacks.Tropicana Casino aims at providing tempting promotions to its players. You will find various promos, including refer a friend in which you get $50 for every friend that you refer to the casino, and he opts to sign up and play. Plus, you can also win up to $10,000 in community jackpot and an additional 20,000 to share with everyone else.Botemania – Best bingo site for Spanish players.
Botemania is designed specially to provide a quality casino gaming experience to Spanish speaking people. This Gamesys site has a charming collection of slots and bingo games.
Botemania has hundreds of slots for its players. The slot titles include 88 Fortunes, Jack Action, Agatha Cristie’s Murder on The Orient Express, Alla Tu, Aloha Cluster Pays, Amazon Queen, Ancient Fortunes: Zeus, Anderthals, Banghai, Boteman, Classic Wilds Progressive. Classic Wilds and Conan the Barbarian.Bingo Lovers will find everything they could want from a casino. You will find the traditional 75,80 and 90 ball bingo games along with their variants. Some of the bingo games to look for are Bingote, Rapibingo, Super Bingo, and Tiki Bingo.Canal Bingo – Fun Spanish Gamesys bingo site.
Canal Bingo is another Spanish-language Bingo site that offers free spins, daily free games, an impressive selection of games, and extremely pleasing promos.