Best Online Slots

We have collected more than 5000 slot games, their rules and pictures in our database and analysed them by different parameters. We have categorized all online slots by their components to give you easy means to find best online slots and online casinos where they are.

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Online slot machine games usually occupy most of the library space in virtual casinos – from 70% to 100%. The reason is high player demand for this cohort. The definition of a slot is a machine with three or more reels that start rolling once the stake is made and the “Spin” button is pushed. Three of the most popular types are classic and video slots, and arcades.

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Characteristics that the developers pay specific attention to are the theme and reel configuration. The term reel configuration is the geometric matrix of the visible symbols, and the most popular one is 5x3, although other variations are possible, as well. Following these two important parameters are the amount of paylines, bet sizes, the advertised jackpot and availability of unique features.

Classic slots are usually the games with three reels and from one to nine paylines. The key theme of such releases will most likely be vintage: fruits, sevens and bars, although modifications can be observed. Modern online video slots are made up of more than three reels and allow to bet across up to 100 winlines. When it comes to this type of content, software manufacturers turn on all the creativity to come up with catchy themes and bonuses.

Among the most popular themes are slot games about animalsromance, epic heroes, and Vegas, just to name a few. Slots about Egypt are also always on trend, whereas there is also content that becomes of high demand when the right season comes around. Among such are the so-called X-mas slots.

As to the features, those that require no additional presentation are bonus games, Wild icons, free spins and Scatters. Our database also contains releases with other unique additional options that make spinning more lucrative and exciting. Each of our reviews is an exclusive online guide that provides a detailed description of reel configuration, theme and winning options, a strategy for betting, availability of the gambling option and more. The convenient filtering system located on the left allows players to select among the best video slots with free spins, bonus games, free no download demos, and more.

Best Online Slots

In order to select among a variety of releases that are considered top online slots, KeyToCasino introduces the unique algorithm called Key Rating. It includes several vital parameters that allow players to make an unbiased choice and provide readers with the list of best online games:

  • Game Popularity. This is to evaluate how often customers look for a specific game. Thus, among the all-time favorites are Zeus and Buffalo Spirit by Williams Interactive, Queen of the Nile and Queen of Hearts by Novomatic, Da Vinci Diamonds by IGT, and Jack and the Beanstalk by Net Entertainment.

  • Software Rating. Here, the reputation of each manufacturer is taken into consideration. Among the top developers are Net Entertainment, Microgaming and IGT.

  • House Edge. This one estimates, how high the RTP is – a factor extremely important for those who wager.

  • Uniqueness. This rating takes into consideration rare and original game parameters.

  • Prevalence. This one demonstrates how often a certain release is featured in different libraries.

Even though a lot of manufacturers release new content on a monthly basis, clients tend to favor the good old classic slot games the most. Thus, among most demanded slots are those inspired by Monopoly. Such studios as WMS, IGT, Electracade, Barcrest and 888 Software have games about it in their portfolios.

Wolf themed slots also tend to be of high demand. Those looking for options should consider Big Bad Wolf by Quickspin, Cool Wolf by Microgaming, Wolfpack Pays by Next Generation Gaming and Wolf Run by IGT.

Another often searched request is bonanza. Among the highly rated ones are Bubble Bonanza by Microgaming, Bollywood Bonanza by 888 Software, and the progressive Batman and the Batgirl Bonanza by Playtech.

Finally, many studios prefer to make deluxe editions of their most successful creations. A good example is a popular Lucky Lady’s Charm by Novomatic, which later went deluxe.

Best Slots Casinos

Because this type of entertainment is so popular, there are sometimes entire websites dedicated to slots. If not, each operator will surely provide a separate tab for available machines, filtering them by new, top, featured, Jackpot or progressive, as well as by the theme. Among those places where the selection seems to be unlimited are SlotsMillion and VideoSlots. Considering the extreme popularity of this game classification, many brands also often host slot tournaments, which usually brings additional benefits to successful reel spinning.

There can be such options to play as online free demo and those that pay real money. As to the gaming modes, depending on the platform, customers will be able to select among slots with download or no download format. The most popular developers that allow players to save games on thier computer are Playtech and Microgaming. Places to bet and win that host these studios are Betway32Red21 Nova and Mansion, just to name a few.

Highly popular are the gambling destinations that are adapted for mobile phones, like Moobile Games slots for UK players. Some of the big websites even provide exclusive apps dedicated to this specific cohort. These are especially convenient for users who like to wager on the go because they can pay by phone and play to win real money.

Since certain locations can be restricted by the license, it is also important to adjust the filters on the left to select among those operators that are available in the certain country. Thus, online slots for Canada that allow real money wins are Lucky 247Thrills and Casumo. Among those that cater for South Africa is Leo Vegas, whereas Australia-based residents can register at William Hill or Golden Riviera. Slots in Spanish can be found in Platinum PlayGoWild and over 130 other titles.


The algorithm is simple. One needs to register. This procedure is usually fast and standard, and requires five minutes max. Afterwards, a deposit has to be made, and while making it, a member can select among bonus offers because usually it is slot machines that contribute 100% to wagering requirements. Afterwards, a release has to be chosen, and a bet has to be placed.

Before the newest technologies were introduced, there were two significant differences. Download-based games were of better quality, and the speed was faster. Now, however, instant libraries offer machines of great quality and they can be accessed easily and quickly once the login process is done. So today, the only difference is in having the software installed, or playing straight from the browsers. This last option continues to gain in popularity.

In most cases, strategies don’t work in playing this cohort as wins are dependent on luck and random number generators. However, there are releases where those who place highest stakes get higher RTP and more winning possibilities. Also, machines are usually the ones to contribute the most to earning loyalty points, which is a great way to win some extra benefits. So to sum up – the best strategy is to select reliable gambling locations, check the house edge and select bets that will be best for the paytable of each separately taken release.

This icon usually replaces any missing pictogram in the combination, making it a winning one.

Unlike the Wild symbol, this icon can appear anywhere on the game field and result in making a combination a winning one. Also, Scatters usually trigger additional features.

Both video and classic slots can be progressive. Such games are usually connected to a network, where hundreds or thousands of players can wager on the same progressive jackpot. A certain percentage of the stakes gets accumulated and whoever enters the progressive feature can become a jackpot winner.