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Best Online Slots

Looking to learn more about some of the best online slots currently available? Then this is the place for you. Here at Inside Casino, we offer detailed reviews of a massive range of slots from some of the most revered online casino software providers in the industry. You’ll find unbiased assessments of slot games from the likes of NetEnt, Microgaming and IGT to name but a few. Our aim is to furnish you with as much useful information as possible so that you can get the most out of each online slot.

Online Slot Reviews

Our casino slot reviews are organised into a large database which is constantly being updated. In evaluating each slot, we focus on a fixed set of criteria that can prove crucial to the overall enjoyment of the game, not to mention its ongoing success. These include special features, bonus rounds, RTP and responsivity. We also provide background information about all online slots that we review in order to give you the complete low-down on each title – knowledge is power after all!

Types of Online Slots

Everybody has their own preferences with regards to slot games. Some of you enjoy playing online slots steeped in Greek mythology. Some of you prefer the bare basics of retro games. Then there are those of you who can’t get enough of jungle-themed slot titles. Whatever you predilection may be, you’ll find reviews on all manner of online slot games at Inside Casino. However, before we delve into the different variants currently on the market, here’s a brief history of this captivating gambling game.

A Brief History

Online slots can be traced back to the late 19th century and derive from mechanical countertop machines once used at US grocery stores. Known as trade simulators, these clumsy contraptions dispensed fruit-flavoured chewing gum – hence why cherry and melon symbols still decorate slot reels today.

Mercifully, these primitive machines were superseded by a raft of new mechanical slots in the early 20th century that offered more sophisticated methods of accepting coins and dispensing prizes. John Lighton’s 3 for 1 slot is a prime example.

Mechanical slots were eventually replaced by electromechanical variants in the 1960s such as the Money Honey. These slot games were operated by a lever (this is why they’re called one-armed bandits) and featured bigger pay-outs of up to 500 coins. Unsurprisingly, they went down a storm on the Las Vegas strip.

Further advancements were made in the 1970s with the introduction of fully-electric slot machines that used electrical circuitry and random number generators to control the reels. It was during this period that video screens were also introduced that mimicked spinning reels – this is where we get the term ‘video slot’ from.

The next major developments came with the introduction of the internet, the relaxation of online gambling laws and the enhancements in internet speeds and connectivity (let’s not forget refined coding techniques either). All of these paved the way for the massive and sudden expansion of online gambling and in turn, the seismic proliferation of online slot games. Because of this relentless progress, we now have all manner of slot variants to choose from. Here’s a run-down.

Classic Slots

Based on the original one-armed bandits of the 60s, classic slots are often included as part of an operator’s game portfolio. In most cases they consist of just three reels and a single pay-line. But don’t be fooled into thinking that these types of slots aren’t relevant anymore. Their addictive simplicity appeals to legions of gamers the world-over.

Video Slots

‘Video slot’ is a catch-all term that describes online conversions of land-based machines as well as all other online games, save for classic variants. While versions of bricks-and-mortar machines tend to feature identical game-play, the newer video slot games often feature hundreds of pay-lines and all manner of special features including free spins and side-games. The modern casino-gamer can’t get enough of these types of online titles, mostly because they offer exciting, feature-laden gameplay.

Examples of Video Slots – Action Bank, Fluffy Favourites, Gonzo’s Quest, Jack and the Beanstalk, Twin Spin, Motorhead, Piggy Riches

Progressive Jackpot Games

Progressive slot games represent another growth area in terms of online casino gaming. These versions include uncapped jackpots which increase incrementally every time a player deposits money. The longer the main prize isn’t claimed, the larger the jackpot which of course means some enormous, life-changing pay-outs. The jackpot is often further boosted because many of these slots are linked together by massive networks that pool player stakes. Gameplay tends to be similar to modern video slots with extra features sometimes added on top of a simple base game.

Examples of Progressive Slots – Mega Jackpots: Cleopatra, Mega Jackpots: Golden Goddess, Mega Jackpots: Isle of Plenty, Mega Jackpots: Siberian Storm

Responsive Online Slots

Thanks to HTML5, all of the above slot game variants are now available to play across multiple devices. Previously, the use of Flash prevented the smooth operation of casino games on smart devices, but no longer. Developers are now able to write games for a multitude of platforms. Many casino software developers have also converted their old Flash games to HTML5.

Major Online Game Developers

So what about the companies that create online slot games? Well, at Inside Casino we feature games from all of the major software houses. Each one has its own story to tell in the realm of slot game development – read on for further details.

Aristocrat

The down-under developer that’s made a name for itself by producing ‘pokies’ for all manner of bricks-and-mortar establishments including clubs, bars and of course casinos. Although Aristocrat distributes an extensive range of games to Australia, the company has also tapped into the enormous US market. Most of its online games are straight-up ports of its land-based slot games

Bally

Bally is absolute royalty when it comes to the production of land-based titles thanks to the famed Money Honey machine of the 1960s. Its legacy was enhanced even further in 1994 after it introduced the first touch-screen video slot, Game Maker. While Bally continues to produce land-based games, many of them have been converted for online play as well.

Barcrest

Barcrest was founded in Manchester in the late 1960s and began life as a manufacturer of gaming terminals for the UK’s arcades, bingo halls, casinos and pubs. Specialising in fruit machines the company has been subjected to a number of high-profile takeovers by the likes of IGT and more recently, Scientific Games. These days it develops online titles – its most famous offering is the ubiquitous Rainbow Riches trilogy.

IGT (International Game Technology)

IGT was founded way back in 1975 and specialised in the production of mechanical slot machines. After the success of its video poker machine in the late 1970s, IGT created what is thought to be the first progressive land-based slot, the Wheel of Fortune – one of the most popular slot games of all time. The 1990s saw the company develop online slots which it has stuck with ever since. As a result, players have at their disposal one of the largest back-catalogues of slot games in the industry. Some of IGT’s most notable titles include Cleopatra, Da Vinci Diamonds and Siberian Storm.

Microgaming

Microgaming is a bona-fide online slot specialist that began to develop games in the mid-1990s. In that time it has introduced an endless array of blockbuster slots such as Immortal Romance, Thunderstruck I and II as well as Lucky Leprechaun. The Isle of Man outfit is also renowned for producing progressive games like Mega Moolah and The Dark Night.

NetEnt

Scandinavian upstarts, Net Entertainment, have made a name for themselves in a relatively short space of time by producing innovative titles such as Finn and the Swirly Spin as well as progressive games like Mega Fortune. Recently, this award-winning developer has also started to include branded games as part of its burgeoning portfolio, with titles like Aliens and Guns N Roses proving particularly popular among players.

Novomatic

Novomatic are another company that once specialised in land-based slots. Their famous Gaminator® cabinet, which includes multiple Novomatic titles, is widely available in bricks-and-mortar establishments in the UK and US. In terms of online slots, Novomatic has a formidable back-catalogue that includes titles such as Book of Ra, Lucky Lady’s Charm Deluxe, Reel King and Sizzling Hot.

Playtech

This Israeli gaming firm is one of Microgaming’s main rivals and for good reason. Like their competitor, Playtech has become famous for developing cutting-edge games such as the Three Musketeers and Queen’s Diamond. It also secured the rights to produce Marvel-branded games, releasing a collection of progressive games under that banner including The Incredible Hulk, The Iron Man Series and the Avengers.

Play’n Go

Play’n Go is a Swedish casino game developer founded in 1997. It has expanded quickly since then and now has offices in a variety of locations around the world including Hungary and Malta. Distributing responsive, mobile-friendly games (who doesn’t these days), Play’n Go’s game catalogue comprises big-name titles such as Flying Pigs, Mermaid’s Diamond and, um, Leprechaun Goes to Egypt.