Online slots come in various sizes and flavors. Real money slots players like ourselves can’t get enough of them because of their graphics, unique themes, and special features.

Slot machines require absolutely no skill. As such slot games are easy to play and anyone can have fun playing slots online.

When you visit our best USA online casinos check their library of games. What’s the first thing you notice? Despite offering you a variety of casino games online for you to play. The lobbies of American casinos open up with plenty of slots to play. Not so?

But, more importantly, and compared to blackjack for real money online. Slot machines online are cheap to play with coin denominations that start with $0.10 to $1,500. Another interesting thing about slot games. Is that you can play online slots for free before you risk real money on any mobile casino.

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Quick Tips For Online Slots Players

  • Study the slot game’s Paytable before you play.
  • Play the slots for free online before you deposit real money.
  • Accept the bonus to play slots the online casino offers you.
  • Start with a small deposit first to get the hang of the slot game.
  • Never chase your slot machine losses.
  • Only play slots for real cash at the online casinos Casinowhizz vets.

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Online Slots Themes

No matter which slot machine you play online its theme plays an integral part. Everything about the online slots from its special features, its rules to its visual fidelity center around its theme. It can be a fantasy, horror, racing, or Western theme.

On the whole, a slot machine’s theme is the sugar that helps the medicine go down. Consequently, it’s easier to represent real, or otherworldly topics with HD visuals. Themes in video slots also apply to mainstream appeal.

So, if the Soccer World Cup is on the go. Slot machine developers for real money will release slot games with soccer themes before the World Cup starts. There are slot players who think themes in slot games are not important.

We beg to differ though. Online slot sites developers like Betsoft take the psychological effects; the gameplay mechanics and wrap them into something familiar. Truth is, it’s hard to deny that.


Slot Machine Symbols

The symbols in slot machines go hand in hand with their theme. Take an online slot game like RealTime Gaming’s Cash Bandits 3 for example. We know that it is a heist theme.

But, what about the symbols that square off across the reels? You’ll see bags of cash, a wad of dollar bills, the bandit, and the police car. The bottom line is the symbols on the reels complement the slot game’s theme well.

Moreover, the symbols in the Cash Bandit 3 slot machine are low and high-value symbols. In addition to the symbols, you’ll see the robber Wild, and the Scatters.

When 5 high-value symbols appear on the reels in slot games. Their payouts range from 5x up to 300x your stake.

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Important Online Slot Machine Symbols

Wilds: The wild symbol is the Robber. The wild’s sole duty is to form a winning combination every time it substitutes symbols adjacent to it. It can be low or symbols of high-value. There are different types of wilds in slot machines. There are Walking or Shifting Wilds, Expanding Wilds, and Sticky Wilds.

Walking Wild: Walking Wilds can move from left to right or vice versa across the reels. As they move, they form winning new combinations until they drop off the reels.

Expanding Wild: When an expanding wild appears it covers an entire reel for the big wins. The size of the expanding wild can be 2×2 or 3×3.

Sticky Wild: When a sticky wild pops up, and as it names implies. It sticks to the reels for the duration of one or more spins.

Scatters: In online slot machines the scatter symbol is often the ‘unsung’ hero. Because it seldom offers a payout. As such, slot players tend to ignore scatters to a degree. However, there are slots online that offer scatter pays for 3 or more scatters. Moreover, 3, 5, 5, or 6 scatter symbols trigger the Free Spins feature.

The free spins online slots players receive are proportionate to the scatters. For example, 3 scatters award 10 free spins. Four scatters give 15 free spins and 5 scatters 20 free spins. The nice thing about the scatters, they re-trigger the free spins feature for extra free spins.


Online Slot Machine Jackpots

Slot machine designers like RealTime Gaming and in particular Microgaming and Net Entertainment. Divide their slot games online to play into non-progressive and progressive slots. A non-progressive slot machine’s jackpot never grows but stays the same all the time.

Popular slot games online with huge non-progressive jackpots are Dead or Alive 2 and Serpent Shrine. Dead or Alive 2 offers a jackpot of 100,000x your bet. Slot players who bet the max bet can win an incredible £10 million!

Progressive Jackpots Slots

This is where playing slots for real cash gets serious. Whereas a slot machine with non-progressive jackpots never grows. In contrast to progressive slots machines online. The size of their progressive jackpots continues to grow every time someone plays it. Let’s take a look at progressive jackpot slots, Microgaming’s Mega Moolah.

It belongs to Microgaming’s ever-popular progressive jackpot slots network. Furthermore, hundreds of Microgaming Casinos offer Mega Moolah. At that, the size of Mega Moolah’s slot jackpot reaches epic proportions. Mega Moolah paid out millions of dollars recently.

In 2019, Mega Moolah slot players won an incredible sum of $79 million. And, in 2020 a lucky Canadian online casino slots player won CAD$16 million.

Progressive slots jackpots online are super-popular with slot players. Because they offer life-changing wins on a single spin. The nice bit about slot machines with progressive jackpots. Besides, they are compatible with iOS, Android, and tablet devices.

Key Takeaways Progressive Slot Machines Online

  • You can win the jackpot on a £0.25 per spin.
  • Mega Moolah is the most popular progressive slots. In 2015, Jonathan Heywood won a staggering €17,879,645. It’s the biggest online slots win in history.
  • NetEnt’s Mega Fortune made a 40-year-old man from Helsinki, Finland an instant mega-millionaire when he won €17,861,813.

The Best Online Progressives Slot Games

  • Mega Moolah: The slot machine has 4 progressive jackpots of varying sizes. In 2019 it set a new world record when it paid out 12 times! This year alone 4 lucky slots players already won it! Check out the stats of Mega Moolah slots. It’s delightfully impressive!
  • Hall of Gods: Has an RTP of 95.3%. So, we place it in the medium/high volatility range. Hall of Gods paid out a whopper of €7,820,888 to one lucky Norwegian slots player in 2016.
  • Aztec’s Millions: Is realTime Gaming’s flagship progressive slot machine. It offers a jackpot of more than $3.2 million.

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Low, Medium and High Variance Slots

Online slot machine vendors like Yggdrasil and Red Tiger Gaming divide their slots into low, medium, and high variance.

Thus, each online slots caters to bankrolls of different sizes. Casual slot machine players will play low or medium variance slots because they want to take things easy. While high roller casino VIPs will dive straight into slot machines that are high variance. High variance slot machines have bigger jackpots to the tune of tens of thousands or millions of dollars.

Another characteristic of low variance slot games is that they offer frequent winning spins. They have high hit ratios of up to 40 percent. So, low variance online slot players will receive a winning spin on every 2nd or 3rd spin. The payouts range from 0.2x to 0.5x your stake. As you can see they’re small. Furthermore, low variance slot games offer jackpots of up to $50,000.

Medium variance slot games on the other hand are in between. They offer a winning spin on every 3 to 4 spins and their jackpot sizes aren’t too shabby.


Mobile Slot Machine Compatibility

The online casino slots industry is moving increasingly into the mobile phone direction. Mobile casino slots vendors continually update their software to incorporate the Z-generation.

Millennials no longer see the need for gambling from their desktop. They want to play slots online immediately on their phones! Sadly, gaming from desktop computers could very well be a thing of the past.

Online slots players want to play games that simulate AR and VR environments. As the technology becomes less expensive it’s pretty much the future of the online slots industry right there. Moreover, thanks to 5G internet connections it makes gaming more fun and accessible!

Slot games load faster than ever before on iOS, Android, and Tablet devices. Mobile phone slots players can play the slots for free now. Data bundles are cheaper than ever before. As such, it opens up a whole new slot machine world at the tip of their fingers.


Is It Safe To Play Slot Games Online?

Yes, absolutely. Independent testing companies such as eCOGRA, TST, and iTech Labs test the RNGs of slot machines online casinos offer you. They offer you random winning spins. And the built-in RTPs to the house ensure continued fair play.


Special Features In Online Slots

The more special features an online slot machine has the better. It makes the game more fun to play, and they offer big payouts when you trigger them.

There are exceptions to the rule. But, for the most part, the Free Spins features contain the jackpots of slot machines. This also explains why it is so difficult to trigger the free spin bonus rounds of certain slot games online. Depending on the online slot game’s volatility. You can trigger the Free Spins feature within 25 up to 500 spins.

Free Spins With Multipliers

When we play slots at online casinos. We check if the slot game has a Free Spins feature. Preferably one with big multipliers because the payouts can be mint! Now, the latest slots that is all the rave at the moment is Gonzo’s Quest Megaways Slots.

How so? Firstly, it’s a Megaways slot with a Cascading system. Secondly, it has incredible graphics and pin-dropping audio that draws you in right away. Thirdly, it has a Free Spins feature with progressive win multipliers of up to 15x!


The next thing to Free Spins is re-spins. You can trigger a slot machine’s free spins feature on any random spin in the base game. As long as you hit a winning combination. You’ll keep on getting re-spins.

Cascades or Avalanche Features

When you land a winning combination of 5 to 6 symbols. The Avalanche features remove the winning symbols from the reels.

Moreover, winning symbols drop in from the top to replaces them. Hence, it is possible to snag a few chain wins on your original spin. The most chain wins we had in a slot machine was 5.

Pick Me Options

When you trigger a slot game with a Pick Me bonus round a new screen opens up with treasure chests. If there are 15 chests you must pick on7 or more of them.

Every chest offers you an instant cash prize and their values combine for one big payout. The bonus round ends once you made all your picks and you’ll return to the base game.

Bonus Buy Feature

We’re seeing tons of new slot machines with a Buy or Bonus Buy Option. Now, the British Gambling Commission is not a fan of the Buy Options. The Commission believes it encourages problem gamblers to spend more money. We don’t necessarily agree with them but that’s the way they see it and we respect that.

So, what is the Buy Option and how does it work? The Buy Option cuts out the base game. And, it allows you to trigger the Free Spins immediately. There is a slight catch though. If you use the BuyFeature it costs anything from 50x up to 2,500x your stake. An online slot with a Buy Feature is Nolimit City’s Deadwood.

Bonus Wheel

Slot machines also have a Bonus Wheel that you can trigger on any random spin.

The Bonus Wheel can contain big multipliers, Free Spins, and cash prizes. As you spin the Bonus Wheel, and wherever the marker lands. You’ll win a cash prize or free spins. Moreover, you can trigger the Bonus Wheel with 3 or more scatters.


Megaways Slots

Megaways slots are highly innovative slot machines online with a groundbreaking math model.

So, what makes a Megaways™ slot so special? The fun starts with a six-reel set up along with a horizontal reel that contains 4 symbols. On each spin, 2 to 7 symbols can pitch on the reels. The gist of the Megaways slots is that it gives you a stupendous amount of winning combinations. Interestingly, they change constantly.

But, more importantly, the number of possible Megaways™ can go up to 117,649 win ways on a single spin. The net result is plenty of winning spins. Moreover, Megaways slots teem with special features starting with Cascades. Free spins with unlimited win multipliers, and other special features. They’re also one of the most popular slot machines of all time. And a gold mine for any online slots players for real money.

Big Time Gaming and Blueprint Gaming are the frontrunners of the Megaways slots.

Best Megaways™ Slots To Play Online

  • 1 Million Megaways BC: Offers a jackpot of 45,000x your stake. The win ways go up to a mammoth 1,058,841 and it teems with special features.
  • Survivor Megaways: Offers Free Spins with progressive wild multipliers. A massive jackpot of 39,960x your stake, and incredible HD graphics.
  • Primal Megaways: Has an RTP of 96.76% it offers win multipliers of 243x and jackpot of 50,000x.


Slots With Infinity Reels

The online slots machine industry constantly evolves and reinvents itself. As real money slots, developers marry and incorporate new elements into their slot machines.

What are Infinity Reels? When you land new winning combinations you can add an infinite amount of new reels. In other words, the slot game keeps on adding new reels to the right. If you’re lucky, you can add up to 30 new reels in one round for a massive payout. It’s highly unlikely, but it indicates the possibility. That is the short and sweet end of it at least.

  • Slot games with infinity reels are highly volatile. It can be a good and a bad thing.
  • They offer huge jackpots of up to 25,000x your stake.
  • Offer Cascades, therefore you can score plenty of winning spins from your original spin.
  • On each winning spin, it adds more reels to the right.

Odin Infinity Reels is another top example of such an innovation.


The Future Of Online Slot Machines?

The future of the online slots business is definitely mobile casino gaming. As the old saying goes, the rising tide raises all boats. Mobile casino slots gambling raked in billions of dollars last year in revenue.

With the newest innovation in online slot machines. It’s evident that they are breaking out of their niche corners. We’re seeing Megaways slots and now lately, slot machines with Infinity Reels for a fully immersive experience.

Low-speed Internet connections kept mobile casino slots players out the loop for a while. It’s no longer the case, because with the advent of 5G for mobile devices. Smartphones will be much faster and laggy slot games experience ancient history. We’ll see big budgets, big teams, and slot games with increasingly realistic graphics.

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It means that you can play the very best online slots for free at our best online casinos. Essentially it’s exactly what it says: “Free” slots online. The only problem with free slots is that you can’t win any real money with your free credits.

You can play any free slots at an online casino that’s covered by absolutely free! All you need to do is go to the website of the casino, click on their online slots library, and a new page opens up with all their slots. Pick the slots for free you want to play, click on Demo mode and start playing.

Some online casinos will allow you to play their online slots for free while others will prompt you to register an account. Our best USA online casinos offer you free slots from Betsoft, RealTime Gaming, Rival, Saucify, and WGS. If you’re from Europe you can play the best free slots online at our NetEnt, Betsoft, Play N’ Go, Yggdrasil, Quickspin, Microgaming, or Pragmatic Play casinos.

No, you don’t have to download the free slots software. You can play all the slots online for free on your mobile phone’s or your Desktop computer’s browser. Some online casinos will ask you to register an account with them first before you can play.

There are literally thousands of free slots you can play online. The most popular free slots are the ones with the sharpest visuals, jackpots of up to 70,000x your stake, free spins with big multipliers, re-spins, Wilds, High Hit Ratios, and RTPs that shake 96% and above. Our favorite free online slots at the moment are Rise of the Mountain King, Spring Tails, Coywolf Cash, Ice and Fire, Multifly! and Treasure Heroes.

As far as their RTP, jackpots, in-game bonus rounds, hit ratios, jackpots, visual fidelity, coin bet options, symbols and volatility goes – they are the same. The only difference between them is you don’t risk any money with the one while you risk money with the other.

Yes, free online slots are completely random. The same principles that govern the mechanics of real money slots govern them too. The outcome of each free slot is already determined by a random number generator after you made your first spin. So, yes they are random.

The bonus rounds of free online slots come in all shapes and flavors. Some of them have Free Spins with progressive win multipliers of up to 60x, Re-spins, sticky wilds, expanding wilds, shifting wilds, wild reels, pick me games, and a cascading system. Sometimes you get online free slots with all these bonus games, and at times you get slots with only re-spins or a cascading mechanic.

Yes, players from the U.S can play slots for free at our best USA online casinos. All you need to do is visit our top online casinos USA, pick the free slots you like, and play.

When you play a slot machine at an online casino in Demo mode there is no risk. Why? The casino gives you free credits to play the game before you risk real money. It’s a nice way to test the slot machine’s in-game features, its volatility, and Hit Ratio. Once you played the slots for free online you’ll know how much money you need (bankroll). Which symbols are the premium symbols. How many spins you need to make before you trigger the free spins, and if the game is worth all the hype.

Players often get caught up with all the bells and whistles of new slots release they often forget to keep things ‘real’. When you play free slots online, play it just like you would play it for real money. If you usually play real money slots with a bankroll of $1,000, and at an average bet of $5 per spin – don’t deviate from it. Never play free slots outside the ambit of your bankroll because you’ll never know for sure how much money you need, or how volatile the game really is. Furthermore, take notes as you play such as what was your average bet, how many spins did it take before I triggered the free spins, etc.