For variable-state slots, you have to know what the positive point is for that model of machine. For example, on the Piggy Bankin' slot machine, I think it becomes positive when there are about 40 credits in the bank. At that point the player is supposed to play one coin at a time until the bank is hit. Wizard of Oz slots is the original version in the popular series of online slot games brought to you by WMS. Based on the cult classic film, Wizard of Oz slots has lots of exciting bonus rounds.

• Wizard Of Oz Slots Strategies
• Wizard Of Oz Slots Zynga Strategy

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You're welcome! In an 8/5 game, the jackpot would have to reach 37,704 coins to reach 100%, assuming you have to play 20 coins to win it. Assuming only 8 coins, the meter would have to reach 15,082 coins. On a 7/5 machine and 20 coins required the meter would have to reach, 46,956 coins. These figures assume you are playing the proper strategy for these pay tables with a per coin payoff for a royal flush of 800. As the jackpot grows some strategy adjustments are called for to more aggressively try for the royal. These adjustments were not calculated in this answer. It doesn't make any difference what the coinage is.

Each frame in these video slots is weighted equally. Any given line is equally likely to produce any given combination. Thus, the return is the same regardless of the number of coins played.

Thanks for the kind words. I have barely heard of teams of slot players doing this. However, this is very common with progressive video poker players. There are teams of these professional players who routinely check the meters and when they find one high enough they call their teammates in an attempt to monopolize the machines until somebody hits the jackpot.
The problem with slots is that it is not clear to the player what the odds are of hitting the jackpot so it is not obvious what the jackpot size has to reach for the machine to become profitable. Plus, it probably rarely happens that a meter gets high enough to overcome the house edge.

If the odds against something are 4 to 1 then there are 4 chances it won't happen and one chance that it will. So, in this example, the probability would be 1/5. It doesn't matter what the probability is, if the events are independent then the past does not matter.

None of these factors matter. Walk away when you're not having fun any longer.

For variable-state slots, you have to know what the positive point is for that model of machine. For example, on the Piggy Bankin' slot machine, I think it becomes positive when there are about 40 credits in the bank. At that point the player is supposed to play one coin at a time until the bank is hit. The book Robbing the One-Armed Bandits by Charles Lund (1999) covers specific positive points for various machines, however many of the machines covered in that book are now hard to find.
As for how to determine when a progressive jackpot is unusually high, you'll either have to observe it over a long period of time or find someone who has done the same. For example, SlotCharts.com keeps data on progressive slots at online casinos. But even when a progressive slot is unusually high, it's impossible to know at what point it becomes high enough to be a positive-expectation game without knowing how the probabilities on the machine are programmed. In my section Deconstructing Megabucks I attempt to figure out when the jackpot is large enough to have a player advantage.
Update: Since this question was published, SlotCharts.com is blocked to U.S. traffic.

Thanks. This is a good question and I wish I had a firm answer. The exact answer depends on the theoretical return of both machines, and nobody ever reveals this information. Yes, you do get a better return in general on dollar machines than quarters, but you are giving up the max-coin bonus. I think the house edge will do down about 2% making the jump from quarters to dollars. However, without reel weightings, I can't tell you the cost of not playing max coins. My general advice is to find a slot machine without a max-coin incentive and then bet one coin at a time.

You’re right, the mathematical answer is that it doesn’t matter. I would choose the machine either randomly or based on environmental factors. My highest priority is that if there were any smokers in the vicinity I would sit as far from them as possible. Otherwise I would distance myself from any loud noises, including other players. If the machines were crowded I would pick an aisle machine, giving me a little more elbow room and one less neighbor.

I believe that most online slots have a fixed return, regardless of the coinage. This is unlike slots in real casinos, which return more the greater the coinage. What you should do depends on your priorities. If you want playing longevity then you should play as little as possible per spin. If you want hope for a big win then you should play as much as possible per spin. However the house edge is likely the same either way.

No. If your goal is a small win then you should be playing low volatility, high hit frequency games. I can’t suggest any particular games but look for ones with comparatively small jackpots. These will also help you to play longer.

I’ve been asked about these North Carolina slot machines so many times I’m tempted to fly there just to see them for myself. Yes, if they did give the probability of each symbol for each reel then an optimal strategy and a return could be fairly easily calculated. However I have never actually seen such a table and have never worked out the odds.

The odds are exactly the same on a one line, 10 line, and n-line video poker machine. When you get a trash hand in 100-play you can expect to get about 36% of your original bet back. In 10-play it is still 36% but there is more volatility. In 1 play it is still 36% but you can get lucky and get a high paying hand on the draw. In other words you are more likely to hit it big on the draw in single play, but at the expense of lots more non-paying hands.

For purposes of determining the game outcome the slot machine does not consider how many lines you bet or how much per line. The only thing that matters is the exact nanosecond you pressed the spin button. Random numbers drawn at exactly that time will determine the outcome, since the machine is picking numbers even when you’re not playing.

1st place: $1,000,000
2nd place: $150,000
3rd-6th place: $25,000
7th-8th place: $20,000
9th-50th place: $5,000

The cost is $25,000, and the tournament is limited to 50 players. It is easy to see the expected win is $30,000. However, it is a huge long-shot. What would be the required bankroll for entry to be a sound bet under the Kelly Criterion?

The Kelly Approximation is the advantage divided by the variance. The possible outcomes are a win of 39, 5, 0, -0.2, and -0.8 times the bet amount. The advantage is (1/50)×39 + (1/50)×5 + (4/50)×0 + (2/50)× -0.2 + (42/50)×-0.8 = 0.2.

The variance is Expected(win²) - (Expected(win))² = (1/50)×39² + (1/50)×5² + (4/50)×0² + (2/50)× -0.2² + (42/50)×-0.8² − 0.2² = 31.4192

So, the approximate optimal Kelly bet is 0.2/31.492 = 0.0063655 times the bankroll. For a full entry of $25,000, the required bankroll would have to be 25,000/0.0063655 = $3,927,400.

However, for large bets like this, I think it is worth the time to find the exact optimal Kelly bet. Next, find the bet size b, which maximizes the expected log of the bankroll after the tournament, as follows.

Wizard Of Oz Slots Strategies

Log of bankroll after tournament = (1/50)*log(1+39×b) + (1/50)*log(1+5×b) + (4/50)*log(1) + (2/50)*log(1-0.2×b) + (42/50)*log(1-0.8×b)

There is no easy way to solve for b. Personally, I recommend the 'Goal Seek' feature in Excel. The answer will come out to 0.0083418. So, the exact Kelly bet should be 0.0083418 times your bankroll. To justify the $25,000 entry fee, your bankroll should be $25,000/0.0083418 = $2,996,937.

1. Does this take into account the unknown house edge on the slot machines?

2. What would be the playing strategy for the best overall return? Could you just sit back and not gamble, and hope that the other 49 players all end up behind, while you break even and take the grand prize of $1,000,000?

Slot tournaments are always held on dedicated tournament machines. Usually these machines don’t accept bets, so your balance will either stay even or go up, after each play. So it doesn’t make any difference what the return is; the more you play, the more you can expect your balance to go up. Even if you had to play conventional slot machines, I would still bet as fast as possible, stopping only if I got a jackpot large enough to likely win the tournament. The reason is that it is very unlikely that 49 out of 49 players would be negative.

Interestingly, there was once a slot tournament at Caesars Palace where they gave a prize to the person who finished last. However, they didn’t announce this rule until the award ceremony. If you somehow knew of such a rule, indeed, it might be best to not bet.

I would play once on a $5 three-reel single-line game. Win or lose, walk away after one spin.

Play The Wizard of Oz Online Slots

The Wizard of Oz slot was made by Williams Interactive (WMS) is one of the oldest companies in online casino games industry. It is a subsidiary of Scientific Games Corporation nowadays, but for 40 years WMS designed, developed, manufactured, distributed and marketed casino games and slot machines, video lottery terminals and video gaming terminals.

There are ten symbols in total in Wizard of Oz slots. All of them represents a character or an event from the original tale. And as for the good news, all of them are high valued. There are no low valued symbols (numbers and letters) in the game, which makes the payout values higher. Symbols and their paytables are shown in this table:

In other words, they know what they are doing when it comes to video slot games. Wizard of Oz slots is an excellent example of this. This legendary tale becomes an amazing slot game under the hands of WMS. It has tons of exciting features and huge payouts, with a fast and simple gameplay. It is time to lead Dorothy home – are you up to the task?

Gameplay

Wizard of Oz online has colorful and cute graphics – just like the original tale. Art style of the game looks like its hand drawn, suits the theme and the story. Wizard of Oz slot machine gets its inspiration from the same named movie actually, inspired by The Wonderful Wizard of Oz book, so expect to see a lot familiar characters. In short, graphic and animation quality is good. Not 'jaw-dropping' good but more than enough for this genre. As for theme, it belongs to the 'Cartoon' and 'Tales' category.

Interface is amazingly clean – there are only three buttons and three sections. Each of them are easily understandable. Even the beginner players won’t have a hard time to understand what’s going on, all buttons and sections have simple tip lines. Game also supports Auto Play, which means you can set a number for automatic spins.

Free Wizard of Oz has 5 reels and 30 paylines. A fair amount, since because reels have three slots only. As for features, the game contains wild symbols, scatter symbols, and lots of bonus rounds. In fact, there are nine different bonus rounds – an amazing amount. You can play for fun (free slots) or for real money. Start with the demo version and move on to the 'real' game after you practice enough, which is always a good strategy. Game requires no download by the way, this is another plus.

How to Win

As we mentioned, there are 30 paylines but these can be altered and lowered, if you want. You can do this from the 'Lines' section but we recommend always playing with the maximum number of paylines. The more the number, the more the possibilities. You can set the coin value from the 'Bet/Line' section, and this can be between 0.01 and 5.00. Choosing 5 will make the maximum bet amount equal to 150 coins. Playing with the maximum bet amount is the safest strategy here, even if you are playing in demo mode.

As you can see, all of them have high payment values. Especially the jackpot symbol – five them awards the player with 50.000 coins. This is a big value and can make you rich in seconds. There are other special symbols in the game too, which we will explain below.

Bonus Rounds and Free Spins

There are three special symbols in the game; wild, jackpot and feature (scatter).

Jackpot symbol is shown with a 'Jackpot' sign and it is the most valued symbol in the game.

Wizard Of Oz Slots Zynga Strategy

Wild symbol is shown with the 'Wizard of Oz' sign and substitutes for all other symbols, except feature (scatter).

And for the Feature symbol… This is where it gets interesting, especially if you are looking for free credits for Wizard of Oz slots. This symbol is shown with an Emerald picture, there is a 'Feature' sign beneath it. Three of them activates the 'Oz Pick Me' Feature. Depending on your choice, you will activate one of the nine bonus rounds. These are:

• Glinda Good Witch: The good witch symbol will start to appear on reels one through five during the main game. This symbol acts like wild and turns the entire reel it appeared on into wild.
• Oz Pick Feature : You are asked to pick between three closed symbols. Depending on your pick, you are awarded with x10 to x25 times total bet.
• Winged Monkey: This is the free spins feature. If you pick this one, you are awarded with 8 free spins. During the spins, entire reels change and two more wild symbols start to appear on them. First one is the 'Winged Monkeys Wild Symbol' which acts like a normal wild and substitutes other symbols. The second is called 'Winged Monkey Wİld Feature' and appears only on middle reel. Once it appears, you need to click on it. After that, the screen will be filled by flying monkeys and they will randomly remove some of the symbols from the reels. New ones will drop from above and offer you another winning combination chance. You can re-trigger this round by landing 'Winged Monkey Re-Trigger' symbols on reels 1, 3 and 5. These symbols will award you with 8 more free spins with the same ruleset.
• Road to Emerald City: You need to pick between a group pf emeralds. Each emerald will award you with extra Wizard of Oz free coins. İf you manage to find Tin Man, Scarecrow and Lion, other bonus rounds will trigger.
• Scarecrow Corn Field: You need to pick one of the two golden charms. If you manage to find the Scarecrow, extra coins will be awarded. If not, you are sent back to Emerald City feature.
• Tin Man Apple Orchard: Again, you are asked to choose one of the two golden charms. If you manage to find the Tin Man, extra coins will be awarded. If not, you are sent back to Emerald City feature.
• Cowardly Lion: Same as above: Pick between two golden charms. If you manage to find the Lion, extra coins will be awarded. If not, you are sent back to Emerald City feature.
• Wicked Witch Castle: Last 'pick between two golden charms' feature. If you manage to find the Dorothy, extra coins will be awarded. If not, you are sent back to Emerald City feature.
• Emerald City: This is the last bonus round of the game. You stand in front of the Emerald City gates and asked to pick between four different golden charms. Depending on your choice, one of the other bonus features will get triggered. You can also win x1.500 times the line bet during this feature.

Conclusion

You can guess this part: We liked Wizard of Oz. Bonus rounds are awesome, in fact, they deserve to be an independent game. This is a very fun and exciting game, one of the fine examples of the genre. After playing Wizard of Oz, you will understand once more why you love slot games. Payout amounts are nice too – you can win 50.000 coins on a single spin. Highly recommended. In fact, if you will play only one slot game this week, that one should be Wizard of Oz. You might like Bejeweled slot if you had gteat time here.