Slots with a Doubling Option - Slot Machines with Gamble/Doubling Feature
IvanPronin
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June 16, 2026 at 9:11 PM
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June 16, 2026 at 9:11 PM
One of the features of slot machines that allows you to increase your winnings is the double-up game. The selection presented on this page of the free casino games collection includes practically all slots that have been released during the development of online gambling. Some developers have managed, through their products, to create several types of double-up games. Here you will learn about the most popular types of gambling games, as well as the best slots with this feature.
Doubling the winnings you have received is a tempting offer for a player spending time at a slot machine. ✖2️⃣ And then again! ✖2️⃣ And again! ✖2️⃣ And before your eyes, in literally a few moments needed to press the special button, 💵 1 won dollar turns into 💵2💵, then into 💵💵4💵💵 and into 8, and so on, as long as luck stays with you, or rather, until the slot machine’s generosity runs out in the round. 🤑
✖2️⃣ Double-up game: the history of the feature and its characteristics
Not everyone can answer the question correctly: ” When did the creators of slot machines first introduce the risk game feature into their products?” And the question is really not simple. Only a player with a lot of experience, who visited gambling houses long before the internet appeared, will answer it correctly. Even then, he could easily be wrong, saying that the first gambling button for doubling the result was added to video poker or to “Igrosoft” slots. Others will correct him and say: “In Novomatic slot machines.” And that would be wrong too!
The first slot machine with a gambling feature should be looked for in the years when an electric drive was added to the mechanics of slot machines, and then microcircuits and software modules, primitive by today’s standards but innovative at the time. We are talking about the 1970s.
So the first variations of doubling the result of the reels appeared in electro-mechanical classic slots. Thanks to this innovation, International Game Technology became the leader in casino equipment production at the time.
In the 1980s, video poker appeared and the gambling round became a great addition to this type of slot machine. And then the still young Novomatic, followed by Igrosoft and other developers, began adding the gambling game to their software.
🎲🎴 Types of double-up games
The double-up game is also called “risk game” or, in English transcription, “gambling”.
There are several variants of the gambling game. The most common are:
- guess a card higher than the dealer’s – one card out of five is revealed, four are face down. The player chooses a card and, if it is higher than the revealed one, the winnings are doubled. You can take the prize or, if the slot rules allow it, keep increasing it. But you need to understand that the risk of losing everything is high;
- red/black – you need to predict what color the suit of the next card from the virtual deck will be. A heads/tails or win/lose variation is also possible;
- gambling wheel – a wheel with a pointer, the space inside which is divided into a loss zone and a win zone. By pressing a button, the player activates the pointer, it starts spinning and stops in one of the zones;
- on suit – if guessing the color allows the player to double the winnings, then a correctly chosen card suit will bring a fourfold increase;
- doubling the bonus result – this option allows you to increase the potential of the bonus round and play for bonus free spins. That is, having won, for example, 10 free spins with special features, the player can increase their number.
The rules of some slot machines allow you to keep part of the winnings, and the player, continuing the double-up game, risks only half of the prize money.
Some developers “decorate” the risk game to fit the slot’s theme. In such variations, the player interacts with one of the characters in the slot machine’s storyline or with elements of the themed plot.
🏆 Best slots with a double-up game
Right now, the risk game has become a less in-demand slot feature. The popularity of the gambling round is a thing of the past, so the slot machines that can be counted among the best with this feature will mostly be from years gone by. But there will also be a little room for new slots. Because the decline in popularity of the feature does not mean a complete abandonment of it.
It would be correct to include Video Poker first in the top slots with a double-up game.
🃏 Aces and Eights video poker
If we talk about online video poker, Microgaming slot machines come to mind. Some of the first licensed casinos to make a name for themselves in the Russian-language segment and offer a superb assortment of slot machines were on the Microgaming platform. And in the early 2000s, a licensed casino with rubles and software from this provider even appeared, and it is still working.
Review of the Russian casino “Goldfishka” with licensed Microgaming softwareAces and Eights was chosen as an example, and this is only one of many video pokers, and almost every one of them can be called the best slot machine for doubling if we are looking specifically at this type of gambling game.
But as for this slot machine specifically, with a bet of 5 coins for a combination of four identical cards, four of a kind, the player will get 100 credits. And if it is four eights or aces, then 400. And this prize can be “hit” several times. Not to mention the jackpot itself of 4000 coins for a royal flush .
If you want to check out the full list of video poker machines that have been released during the development of online gambling, just click the button below. 👇
🎰 Classic slots with a risk game
Classic slots, as we understand from the history of slot machine development, began offering the player a round for doubling winnings long before video slots and video poker. But modern developments with elements of the classics are still much more interesting than rare slot machines.
For example, BGAMING released the classic Mechanical Clover slot. Among its features you will find a wild with a multiplier, changing the reel set to a larger number of paylines, respins, and a risk game where you have to guess a card higher than the dealer’s, which leads to doubling the winnings.
💻 Slots with a risk game
In this material, it is also worth definitely mentioning the well-known blockbuster of the gambling world, “Books”, because it contains a double-up game and is among the top ten slot machines, but it earned such honors still for its exciting mechanics, not for the presence of the ability to double the winnings for a combination.
But if you are interested in the risk game, keep in mind that it is not available in all Book of Ra analogs.
A double-up game is probably also present in every Igrosoft slot machine, but the design, characters and storylines of BetSoft slots, created using 3D graphics, look much more attractive, and Double Game is also often found among them.
💠 Slots with Cluster pays and a double-up game
Nowadays, different developers offer quite a few slots with the Cluster Pays feature. This is a pretty interesting feature, accompanied by cascading symbol drops, and it is also not uncommon for each subsequent winning combination to increase with a multiplier.
But a slot machine with cluster payouts, and even with a double-up game, is rare. They do not come up often, but they do exist. 👇 And here is one of them 👇
🔎 How to find a slot with a double-up game
4LUCK has a huge collection of gambling entertainment available for free play. And that is not to mention online casinos with ratings or bonus offers from gambling sites.
You can learn more about the search tools with the instructions
All the features of the 4LUCK search filter
These guides explain how to quickly choose the best casino and compare several gambling sites by certain characteristics.
Search also works in the demo slots section. The filter is displayed in the game subcategory. To find a slot with a risk game, you only need to press one button and a list with the corresponding software will be generated.
But as you already understood, the filter has much more selection options. Go to the section with all video slots, then to the subsection with the game type, and choose the parameters you want to see in the slot machines.
🎲 Winning strategy in slots with a double-up game
If someone is looking for a no-lose strategy for winning at slot machines, such people are in for disappointment. There are no surefire winning tactics! And it is better to accept this information right away than to believe a scammer, pay money for information or participation in fake hacks of online casino slot machines, and only then realize that it turned out to be complete nonsense and a pure rip-off.
So stay alert, never try to use a casino to make money, and spend time on gambling sites only with the intention of relaxing. And if you want to play slot machines with a double-up game, their full list is on several pages in this subcategory. 👇👇👇
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