Online Slots: Top Games & Casino Picks

This guide by focuses on slot games popular at leading European-based casinos as well as international casinos that offer services to European players. You’ll find a list of top casinos with high RTP slots and tips for playing online slot games that can increase your profits.

Online Slots Games

Top Online Slot Games Popular in Europe

The following slot games rank among the top choices featured for players in leading online casinos across Europe. This list includes a detailed view of each game’s key characteristics: RTP, volatility, maximum win potential, jackpot availability, and their providers. While all players have personal preferences, our favorites include slots from top providers, such as ‘Money Train 4’, ‘Book of Dead’, and ‘Lucky Lady Charm Deluxe’.

Book of Dead
  • Provider: Play’n GO
  • Type: Video Slot
  • Released in: 2016
  • Max RTP: 96.21%
  • Paylines: 10
  • Volatility: High
  • Bet Limits: €0,01-€50
  • Max. Win: 500x (per spin)
  • Jackpot: n/a
Lucky Lady’s Charm Deluxe
  • Provider: Novomatic
  • Type: Video Slot
  • Released in: 2010
  • Max RTP: 95.13%
  • Paylines: 10
  • Volatility: High
  • Bet Limits: €0,01-€50
  • Max. Win: 900x (per spin)
  • Jackpot: n/a
Deadwood xNudge
  • Provider: Nolimit City
  • Type: Video Slot
  • Released in: 2020
  • Max RTP: 96.03%
  • Paylines: 576
  • Volatility: Very High
  • Bet Limits: €0,10-€100
  • Max. Win: 13,950x
  • Jackpot: n/a
Dead or Alive 2
  • Provider: NetEnt
  • Type: Video Slot
  • Released in: 2019
  • Max RTP: 96.82%
  • Paylines: 9
  • Volatility: Very High
  • Bet Limits: €0,10-€18
  • Max. Win: 111,111x
  • Jackpot: n/a
King Kong Cash
  • Provider: Blueprint Gaming
  • Type: Video Slot
  • Released in: 2016
  • Max RTP: 95.79%
  • Paylines: 20
  • Volatility: Medium
  • Bet Limits: €0,10-€500
  • Max. Win: 1,000x
  • Jackpot: n/a
Money Train 4
  • Provider: Relax Gaming
  • Type: Video Slot
  • Released in: 2023
  • Max RTP: 94%, 96.1%
  • Paylines: Cluster pays
  • Volatility: Very High
  • Bet Limits: €0,10-€6
  • Max. Win: 150,000x
  • Jackpot: n/a
Razor Shark
  • Provider: Push Gaming
  • Type: Video Slot
  • Released in: 2019
  • Max RTP: 96.70%
  • Paylines: 20
  • Volatility: High
  • Bet Limits: €0,20-€50
  • Max. Win: Infinite
  • Jackpot: n/a
Jammin’ Jars
  • Provider: Push Gaming
  • Type: Cluster Pays Slot
  • Released in: 2018
  • Max RTP: 96.83%
  • Paylines: 8×8 Grid
  • Volatility: High
  • Bet Limits: €0,20-€100
  • Max. Win: 19,998.5x
  • Jackpot: n/a
Big Bass Splash
  • Provider: Pragmatic Play
  • Type: Video Slot
  • Released in: 2022
  • Max RTP: 96.71%
  • Paylines: 10
  • Volatility: High
  • Bet Limits: €0,20-€50
  • Max. Win: 5000x
  • Jackpot: n/a

Popular Types of Online Slot Games

The vast majority of players at online casinos in Europe prefer video slots. This slot game type offers some of the highest payouts, second only to jackpot slots. Real-money video slots are readily accessible on laptops, desktop computers, and hand-held devices, thanks to mobile casino versions. The following section offers more detailed insights into each type.

Bonus Buy Slots
Bonus Buy slots allow players to purchase access to special features—bonus or free spin rounds—at a cost, often 100 times the initial bet. This feature bypasses regular gameplay for high-reward segments.
Branded Slots
Branded slots are high-quality online games featuring themes from well-known brands, movies, TV shows, or celebrities. Some of the best examples include Microgaming’s ‘Terminator 2’ and ‘Jurassic Park’.
Classic Slots
Classic slots are old-school favorites—simple and reminiscent of traditional slot machines, usually with 5 reels and 10 paylines. They offer a straightforward, no-frills experience, focusing on slot gaming essentials.
Cluster Pays Slots
Cluster Pays slots, a newer format in the European market, feature a grid of symbols. The goal is to form clusters of matching symbols adjacent to each other, diverging from traditional payline alignment.
Jackpot Slots
Jackpot slots, especially progressive ones, offer large, potentially life-changing jackpots. Provided by top companies like NetEnt and Microgaming, slots like ‘Mega Fortune’ and ‘Mega Moolah’ are popular for their significant winning potential.
Megaways Slots
Introduced in 2016 by Big Time Gaming, Megaways slots have reels with varying symbol sizes, offering up to 177,649 winning combinations. They blend classic and video slot components, including free spins games and random bonus features.
Video Slots
When we think about online casinos, video slots immediately come to mind. These slot games come with diverse themes, advanced graphics, and multiple free spin bonus features.
Live Slots
Live slots, like Buffalo Blitz Live by Playtech, mark a new era in online casino gaming. Retaining classic RNG-based slot machine mechanics, these games introduce a live casino element—a real game host. Players simply set their bet size and choose their auto spins to start playing.

Leading Online Slot Providers in Europe

In the realm of online slots, leading casino game providers aim to develop their own unique themes, features, and mechanics. Their creations are consistently met with eager anticipation.

Key Components in Top Online Slot Games

Reels and Rows
Most slots feature three to five vertical columns, known as reels, each typically having three to five rows of symbols.
Lines on which winning combinations of symbols must appear to result in a payout. Classic slots often have 3, 5, 10, 15, 20, or 25 paylines.
Images or characters that appear on slot reels and form winning combinations.
A symbol that can substitute for other symbols to create winning combinations. Special features like expanding, walking, and sticky wilds can be activated by these symbols.
A symbol that usually activates the bonus rounds and free spins.
Special symbols or features that multiply your winnings by a certain factor, often appearing in bonus rounds or free spins.
Bonus Round
An extra game activated during regular gameplay by landing a special symbol combination. Usually includes free spins and other features that can enhance winnings.
Free Spins
A bonus feature providing a set number of free spins, usually between 3 and 15, triggered by hitting three or more scatter symbols.
Gamble Feature
An optional feature that lets you risk your recent win for a chance to double it, usually via a simple ‘red or black’ or ‘heads or tails’ type gamble game.
RTP (Return to Player)
Indicates the percentage of the total bets returned to players over time. Common RTPs range from 92% to 98%.
Defines the risk level—low-volatility slots offer frequent but smaller wins, while high-volatility ones yield larger but less frequent payouts.
Some slots offer fixed jackpots, while others feature progressive jackpots that grow over time and across multiple games.
Minimum and Maximum Bets
Predefined lower and upper betting limits, with some games allowing bets from a few cents to hundreds of euros per spin.
Autoplay Function
Allows for setting a certain number of spins to play automatically.
Quick Spin
Enables faster reel spins, allowing you to play more rounds in a shorter time frame.
Themes and Graphics
Various aesthetic styles and themes ranging from ancient civilizations to modern pop culture.
Sound and Music
Affects the gaming experience but not the mechanics. Some players prefer muted slots, while others enjoy thematic tunes.
User Interface
Intuitive controls and settings for easy navigation, including clearly marked bet adjustment buttons and paytables.
Help Page
Provides detailed game instructions, including specifics on paylines, symbols, RTP, maximum win, and available bonus features.
Mobile Compatibility
Optimization for mobile play, enabling gaming on various smartphones and gambling apps.

Online Slots: How to Boost Winning Chances

In this section you’ll learn about:

Understand Slot Volatility: Key to Smart Slot Strategy

Are you familiar with the concept of slot volatility? While most game providers in Europe openly share the Return to Player (RTP) rates, some are more player-friendly and disclose a game’s volatility. If you’re wondering what volatility entails, it’s essentially a gauge of how wins are dispersed over numerous spins in a specific slot machine game.

Broadly speaking, slots with low volatility tend to offer more extended playtime peppered with smaller wins. Conversely, high volatility slots provide shorter play sessions but pack the potential for larger, more significant wins.

This table shows an overview of slot game volatility types along with explanations.

Volatility TypeWin FrequencyWin SizesRisk LevelPlayer SuitabilityPlay Experience
LowHighSmallLowIdeal for players who prefer frequent but smaller winsOffers a steady gaming experience with fewer surprises
Medium-LowModerately highSmall to moderateSlightly higher than lowSuitable for players who are comfortable with a bit more risk.Provides a balance between the frequency and size of wins
MediumBalancedModerateMediumGood for players looking for a balanced experience.Offers a mix of small and medium wins, with occasional larger payouts
Medium-HighModerately lowModerate to highHigherFits players who are willing to endure longer dry spells.Characterized by longer periods without wins, but larger payouts
HighLowHighHighIdeal for players seeking big wins with patience and bankroll.Marked by infrequent wins, but substantial payouts when they happen

Identifying Volatility in Slots

The most effective method of identifying slot game volatility is to analyze the paytable. A high volatility slot is typically indicated by a large disparity in payouts for hitting two versus five of the top symbols. On the flip side, a low-volatility slot game will show less variation in these payouts.

These are payouts of a highly volatile slot by NetEnt, ‘Dead or Alive’, for two to five top symbols at a bet size of €0.9:

  • 5 symbols = €2,250 win
  • 4 symbols = €22.50 win
  • 3 symbols = €3.60 win
  • 2 symbols = €1.80 win

These tables include some of the most popular low and high-volatility online slots.

Low Volatility SlotsDeveloperMax Win
1429 Uncharted SeasThunderkickx
Esqueleto ExplosivoThunderkickx
Viking RunecraftPlay’n Gox
High Volatility SlotsDeveloperMax Win
San Quentin XwaysNolimit City150,000x
Dead or Alive 2NetEnt111,111x
CherryPop™Avatar UX56386x
Lil’ DevilBTG100,000x
Money Train 4Relax Gaming150,000x

Consider High RTP Slots for Better Odds

The RTP—or Return to Player—is an excellent guide for finding the most rewarding European slot games. RTP is a statistical measure, representing the percentage of total bets a slot game is expected to pay back over an extensive number of spins. This figure is usually determined through simulations run over billions of spins, to calculate the average return.

The RTP calculation formula is simple: Wins divided by Bets, multiplied by 100, equals the RTP. A higher RTP suggests a better likelihood of winning back a portion of your bets over time. However, no slot offers a 100% RTP—every game has a house edge, essential for generating revenue for online casino operators and game providers.

Therefore, playing slots with high RTP percentages is an astute strategy. A higher RTP doesn’t necessarily decrease the house edge, but it does indicate that the slot game is designed to return a larger share of all real money bets to players over an extended period.

This table includes some of the top high RTP slot games with key features.

Top Payout SlotsPaylinesRTPFeaturesProvider
Ugga Bugga1099.07%Held ReelsPlaytech
Book of 991099%10 Free SpinsRelax Gaming
Mega Joker599%The Supermeter ModeNetEnt
Marching Legions24398.12%Free Spins, Nudge, Re-SpinsRelax Gaming
The Catfather998.10%Expanding Wilds, MultipliersPragmatic Play
1429 Uncharted Seas2598,5%Expanding Wilds, Free SpinsThunderkick
Blood Suckers2598%Free Spins, MultipliersNetEnt
White Rabbit248,832 (max)97.77%Expanding ReelsBig Time Gaming

For playing, our recommendation is White Rabbit by BTG; it’s a low-volatility slot game with high payouts.

Maximize Wins Through Bankroll Management

The golden rule is to set a budget for the session—or even a single game—and stick to it under any circumstances. Determine how much money you can afford to lose and how much you would need to cash out.

Regardless of the outcome, the game session must come to an end. When you secure a big win, your instinct might be to keep gambling larger amounts in hopes of achieving an even bigger win.

Conversely, if you lose a significant amount of money, the urge to continue playing to recoup your losses through upped bets can be strong. Both losses and wins can impair your judgment. The desire to recover losses, or the euphoria following a big win, can easily lead to even greater losses.

Apply Strategic Bet Sizing for Optimal Slot Play

How do we optimize our slot play strategy? It starts with careful bet sizing. Establish how much you’re willing to risk, then select a bet size that aligns with your desired play duration and comfort level in terms of risk. Experience a streak of wins? Consider upping your bets. In this scenario, you won’t risk losing your initial deposit but rather some of your winnings.

However, if this doesn’t result in another notable win, it’s wise to scale back your bet size. A tip from—don’t overstay on a single slot. While we all have favorites, clinging to one slot under the misconception that we’ve ‘cracked’ its pattern is a common pitfall.

Feeling that a slot is ‘cold’? It’s time to switch it up. Hammering a slot, and hoping for a big payout, often leads to disappointment. Remember, variety can be the key to a more rewarding online slot experience.

Compete in Online Slot Game Tournaments

In slot game tournaments, you can secure real money cash prizes or extra free spins by ascending the tournament leaderboard while playing your favorite game or any of those provided in the tournament terms. In Europe, these tournaments are an integral part of online casino gaming.

Consider the “Drops & Wins – Daily Cash Prizes” tournament by Pragmatic Play. It features weekly tournaments and daily prize drops. To join, players opt-in on specific slot games from Pragmatic Play’s catalog. Rankings are based on the highest single spin win, adjusted for bet size.

Prizes, awarded either as fixed amounts or bet multipliers, drop randomly during gameplay. A minimum bet of €0.50 rule applies for regular tournaments and prize drops. The total prize pool? A staggering €2,000,000.

This tournament is accessible across all online casinos hosting Pragmatic Play games.

Another notable activity is Bitstarz Casino’s “Slot Wars.” This is a weekly slot tournament with a €5,000 prize pool and 5,000 free spins. The top 150 players share the winnings, with the first-place winner receiving €1,500. Participation requires simply playing any slot game to earn points.

One key condition: players must have made at least one deposit. The Slot Wars cash prize wins are wager-free, and free spin wins come with a 40x wagering requirement.

What makes these tournaments desirable? They provide extra chances to win while players enjoy their preferred real money or crypto slots. Essentially, you’re enjoying your preferred slots with the added bonus of competing for tournament prizes. This dual aspect—regular gameplay combined with competitive elements—is what sets these slot game tournaments in online casinos apart.

Choose Casino Sites with High RTP Slots

Nowadays, many casino slot developers offer games with multiple RTP (Return to Player) options. For example, Book of Dead by Play’n GO has a default RTP of 96.21%, but also comes in versions with lower RTPs such as 94.25%, 91.25%, 87.25%, and 84.18%. This variety allows online casino operators to select the RTP version they add to their gaming suites.

Why play higher RTP slots? Choosing casinos that offer slot games with the highest RTP settings is a logical decision for players—lower slot RTP versions naturally pay back less money over time, which benefits the casino’s margins. Today, casinos that consistently offer the highest slot RTPs are recognized as the best for slot players, translating to better long-term winning chances.

To determine the RTP of your favorite slot game at an online casino, consider the following methods. Firstly, you can examine the game file and compare the RTP percentage with the one listed on the game developer’s website (,, etc).

If the RTP percentage isn’t specified in the game file, a second option is to use your browser’s “Inspection” tool. By navigating to “Sources,” you can investigate further. However, the most straightforward approach for locating RTPs is to use a Chrome desktop extension called RTP Fox.

RTP Fox indicator shows a high RTP slot game setting

This user-friendly extension is free and conveniently displays the RTP for slots from popular game providers, including Betsoft, BGaming, ELK Studios, Hacksaw Gaming, NetEnt, Nolimit City, Pragmatic Play, Play’n GO, Push Gaming, Quickspin, Red Tiger Gaming, Relax Gaming, and Thunderkick.

Best Casinos to Play Slots Online: High RTPs

When it comes to online slots in 2024, it’s more than just finding a reputable casino—it’s about selecting the best sites for offering slot games with high Return to Player (RTP) rates and fast payouts. Below is a curated list of casinos with top ratings, each offering high RTP slots from leading providers including Play’n GO, Nolimit City, and Relax Gaming. All these casinos are evaluated and rated based on their game variety, payout speed, user experience, and overall reliability.

1. Winz Casino

Winz Casino, rated 4.8/5 and established in 2019, houses an impressive collection of over 5,000 games. Modern video slot games are a significant focus, sourced from nearly 100 software providers. Unique features like Megaways and Bonus Buy options are available, along with dynamic events like “Treasure Island Adventure.”

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2. Bitstarz Casino

With a 4.8/5 rating and established in 2014, Bitstarz Casino sets a high bar with its expansive game library of over 5,220 titles. Slots are the main attraction, thanks to collaborations with 80 diverse software vendors. Bitstarz players can dive into popular titles like “Book of Dead” and “Sugar Rush,” or compete in regular tournaments such as “Slot Wars,” which offers a €5,000 prize pool.

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3. SlotVibe Casino

SlotVibe Casino, rated 4.3/5 and established in 2021, provides a rich assortment of over 1,000 slots, contributing to its 3,500+ game catalog. These slots are sourced from more than 40 software vendors, most of whom specialize in video slot games. The platform also showcases a Slot Game of the Week, adding a layer of variety to the gaming experience.

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4. BC.Game Casino

BC.Game, rated 4.3/5 and established in 2017, offers an extensive selection of more than 6,800 online slot machines, which form a large part of its 8,000+ game portfolio. These slots are provided by a diverse range of over 100 software vendors and feature high RTP percentages. They are available to play in Bitcoin as well as other popular cryptocurrencies like Ethereum, Litecoin, and Tether.

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5. Metaspins Casino

Metaspins Casino, rated 4.3/5 and newly established in 2022, features a diverse game library of over 2,500 titles, with slots making up a significant part. All Metaspins slot games are categorized into various types, such as Drops & Wins, Video Slos, and Megaways.

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Free Slot Games Online: Sites to Play

The online casinos we’ve listed above, like Winz Casino and Bitstarz, offer the opportunity to play free slot games—no software download or account registration required. Simply choose a classic or trending new slot game that catches your eye, and you can start playing immediately with free credits.

This risk-free approach allows you to understand the game rules, familiarize yourself with the pay tables, buy features using the demo balance, and get acquainted with the game mechanics—all important for gauging what to expect when you switch to real money play.

Note: Winnings from free play aren’t convertible to real money. To enjoy real-money slot gaming, you’ll need to complete an account registration and make a deposit. Leading casino slot game sites provide a broad array of payment options, ranging from debit/credit cards and e-wallets to prepaid cards, cryptocurrencies, and bank transfers. And hey, when you start, think about setting a loss limit to keep things fun and safe. Responsible gaming is the way to go!

FAQs on Online Casino Slot Gaming

What are the types of online slot games in Europe?
European online casinos present a diverse range of slot games. Real money and crypto players can explore everything from video and classic versions to those featuring a bonus buy option, cluster pays, progressive jackpots, and the innovative Megaways system. Each game type offers unique bonus features and gameplay mechanics.
How does the bonus buy feature work in slots?
In Bonus Buy slots, players can purchase direct access to special features, such as bonus games or free spin rounds. This requires a payment of about 100 times the initial bet, leading to the game’s high-reward areas.
What appeals about progressive jackpot slots?
Progressive jackpot slots like Mega Moolah captivate players with their large, often life-altering payouts. These jackpots increase over time and span multiple online slot games, drawing players with their significant winning potential.
How are Megaways slots different?
Big Time Gaming introduced Megaways slots, which stand out due to their reels with varying symbol sizes. These slots offer up to 177,649 winning combinations, merging elements of both classic and video slots, inclusive of free spins and random bonus features.
What are the best online slots to play?
For those seeking large wins, high-volatility or ‘bonus buy’ slots are recommended. Conversely, for more frequent but smaller wins, players should opt for low or medium-volatility slots. Low-volatility slots, like White Rabbit from Big Time Gaming, suit casual play or limited budgets. For those with disposable funds, high-volatility slots are an ideal choice.
What to know about slot game volatility?
Slot game volatility denotes the risk level and frequency of payouts. Low-volatility slots offer more regular but smaller wins, while high-volatility slots yield rarer but larger payouts.
Why is RTP important in choosing a slot game?
The Return-to-Player (RTP) in slots serves as a key consideration when selecting a game. It represents the expected percentage of total bets a slot game will pay you back over time. A higher RTP indicates a better probability of recouping a portion of bets over the long term.
How can players increase winning chances in slots?
Players can enhance their odds in slot games by understanding both slot volatility and RTP. Effective bankroll management, strategic bet sizing, and playing slot tournament games also contribute to increasing winning chances. Selecting high RTP slots and wise bet management are fundamental strategies.
What are the best casinos for high RTP slots?
For high RTP slots, top sites include Winz Casino and Bitstarz Casino—both noted for offering slot games with high default RTPs from leading providers and fast withdrawals, typically under 1 hour.
What is the best time of day to play online slots?
Our experience finds no optimal time for playing slots, similar to other games in online casinos. However, some real money players believe post-midnight to be the best time, though this lacks concrete evidence.

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