Top-Rated Slot Sites with Felix Gaming Slots
How We Rate and Rank Casinos with Felix Gaming Games
Every casino that appears in our Felix Gaming rankings has been scored against the same eight-metric framework we apply across SlotsRank. No operator pays for a higher position. The number you see is the number our methodology produced.
Safety, Licensing, and Operator Integrity
We verify the licensing status of every casino directly with the issuing authority before listing it. For casinos carrying Felix Gaming titles, we check whether the operator holds certifications from tier-1 regulators such as the Malta Gaming Authority or the UK Gambling Commission, confirm active SSL encryption, and review the casino's track record on player complaint databases. A history of unresolved withdrawal disputes or regulatory sanctions results in removal from our listings, regardless of the size of the operator.
RTP Transparency and Variant Deployment
Felix Gaming publishes verified RTP figures for each title — Joker Heist at 97.6%, It's a Joker at 96.98%, Dark Mystic at 96.4%, and Pharaoh's Temple at 96.67%, among others. We cross-check whether the casinos we list deploy these headline figures or lower operator-configured variants. RTP variant transparency carries 15% of our slot scoring weight. A casino that silently deploys reduced-RTP versions of Felix Gaming titles without disclosure is penalized in our rankings, no matter how strong its other attributes are.
Bonus Terms Applied to Felix Gaming Slots
We evaluate each casino's bonus offers specifically in relation to Felix Gaming game eligibility. Key checks include whether Felix Gaming titles contribute to wagering requirements at their full rate, whether free spin promotions are available on specific titles, and whether wagering requirements are at or below the 35x threshold we consider player-friendly. Bonuses with generous headline figures but restrictive fine print — such as maximum bet clauses of €0.50 per spin during bonus play — score lower regardless of their stated value.
Felix Gaming Slot Performance: Mobile and Technical
Felix Gaming builds all titles in HTML5 for cross-platform delivery. We test each listed casino's performance of Felix Gaming slots on mobile browsers across both iOS and Android before ranking. This includes load times, reel animation smoothness, touch control accuracy, and whether bonus mechanics — particularly the Hold & Win respin sequences found in titles like 100 Hold Hot Hold & Win and Wild Bison Spirit — render correctly on smaller screens without layout breaks or input lag.
Game Library Depth Beyond Felix Gaming
We assess the full game catalog available at each casino, not just the Felix Gaming section. An optimal library includes at least 500 titles from a range of reputable studios, covering video slots, jackpot games, table games, and live dealer formats. Casinos that aggregate Felix Gaming content alongside certified providers from the top tier of i Gaming studios score higher than those pairing it with lesser-known, untested developers.
Casino Reputation and Player Feedback
Reputation feeds directly into our provider assessment framework, which contributes 15% of every slot's composite score. We read verified player reviews, track average withdrawal processing times, and monitor how casinos communicate during game malfunctions or payment disputes. A casino with strong licensing and a clean dispute record elevates the experience of playing Felix Gaming titles on its platform. We revisit these assessments quarterly and update rankings whenever material changes occur.
About Felix Gaming
Felix Gaming is a B2B online slot developer headquartered in Sofia, Bulgaria, founded in 2016 by three industry professionals with backgrounds in the land-based casino sector. The studio was built on a single principle — that online slots had become repetitive and player feedback was being ignored. Rather than scaling output for volume, Felix Gaming took a deliberate, quality-over-quantity approach to building its portfolio.
Company Detail | Information |
|---|---|
Founded | 2016 |
Headquarters | Sofia, Bulgaria |
Secondary Office | Malta |
Founders | Bilyan Balinov (CEO), Anton Mutov (R&D), Dimitar Dimitrov |
First Release | Lines of Magic (2016) |
Portfolio Size | 70+ slot titles |
Licensing | Anjouan Licensing Services Inc. |
Distribution | Alea (exclusive direct integrator), Soft Swiss, REEVO |
Top Performing Title | It's a Joker |
Founders and Studio Origins
All three founders came from the land-based gambling industry and brought over a decade of combined experience in game mathematics, software engineering, and casino operations into the studio. CEO Bilyan Balinov had previously worked with Noble Gaming and Casino Technology, two established names in land-based gaming hardware. Anton Mutov leads research and development, driving the mathematical modeling behind Felix Gaming's RNG systems and volatility structures. The founding team's shared background in physical casino environments directly shaped the studio's approach — a focus on tactile game feel, clear win presentation, and mechanics that translate naturally from reel cabinet to browser.
Distribution and Industry Partnerships
Felix Gaming distributes its content globally through Alea, its exclusive direct integration partner. The studio has also expanded its operator reach through aggregation platforms including Soft Swiss and REEVO, allowing casino operators to integrate Felix Gaming titles via standard API without managing individual connections. This B2B distribution model has placed Felix Gaming slots in live lobbies across hundreds of licensed operators spanning European and international markets. The studio's content is accessible in over 100 countries.
Game Portfolio and Design Philosophy
Since releasing Lines of Magic and Fruity Mania in 2016, Felix Gaming has built a catalog of over 70 slot titles organized into distinct game families. The Joker series — anchored by It's a Joker, Joker Heist, and Joker Qwin Hold & Win — forms the studio's most recognizable identity. Their Hold & Win catalog includes titles such as Wild Bison Spirit Hold & Win, Book of Knight Hold & Win, and 40 Hold Hot Hold & Win, featuring the cash collect respin mechanic with tiered jackpot prizes. A third strand covers fruit boost slots — a range of classic-themed games including 20 Boost Hot, 30 Frozen Fruits, and the Tropical Fruits series — which combine nostalgic reel presentation with modern selectable paylines and wild multipliers.
Felix Gaming was the first i Gaming studio to integrate promotional bonus mechanics directly into the RTP structure of its slots, a technical innovation that distinguishes its approach from providers that bolt bonuses onto standard game math after the fact. The studio presented its first public industry booth at SBC Lisbon, marking a shift toward broader B2B visibility. A new proprietary jackpot network, Felix Stars, is now active across select titles in the catalog.
Best Felix Gaming Casino Slots
Felix Gaming's catalog of over 70 titles spans three distinct game families: the joker series, the Hold & Win range, and the fruit boost collection. The titles below represent the studio's strongest performers across each family — selected on the basis of RTP, mechanic depth, and market reach.
It's a Joker
It's a Joker is Felix Gaming's flagship title and their all-time best-performing slot, consistently ranked in the top 10 games at multiple casino operators worldwide. It runs on a 3-row, 5-column grid with 5 paylines and a dark carnival theme built around a sinister joker character who functions as both wild and top-paying symbol.
The mechanic is distinctive: columns 1 and 5 operate independently from the central three reels, delivering up to 5 free spins and a multiplier of up to 25x on any qualifying combination during the base game. These outer columns stop after the main reels, meaning every spin carries the possibility of a substantial multiplier before the outcome is resolved. Max exposure is 700x the total bet.
Spec | Detail |
|---|---|
RTP | 96.98% |
Volatility | Medium-High (4/5) |
Paylines | 5 |
Min/Max Bet | €0.20 / €60.00 |
Max Exposure | 700x |
40 Diamond Hot
40 Diamond Hot is Felix Gaming's most recent classic-format release, published in April 2026. It runs on a 5×4 grid with 40 fixed paylines and takes a deliberate departure from the studio's fruit symbol tradition — replacing cherries, lemons, and melons with an upmarket gemstone set built around shimmering diamonds, rubies, and emeralds.
The core mechanic is built on two symbol types that drive all meaningful outcomes. The Blue Diamond Wild substitutes for all standard paying symbols across the 40 paylines, creating a stacked symbol dynamic that opens the possibility of full-reel coverage and "Full House" screen fills — the game's highest-payout scenario. The Golden Star Scatter pays out based on total count regardless of position on the grid, adding a non-payline win path that activates on every spin a qualifying number land. A Gamble Feature is also present: after any win, players can stake their payout on a double-or-nothing card color or suit prediction, extending the risk profile beyond the standard spin cycle.
The game ships with three operator-configurable RTP variants at 96.55%, 94.66%, and 92.28%, with volatility rated at level 3 (medium), and a maximum exposure of 5,000x the total bet.
Spec | Detail |
|---|---|
RTP | 96.55% / 94.66% / 92.28% |
Volatility | Medium (3/5) |
Paylines | 40 (fixed) |
Min/Max Bet | €0.40 / €40.00 |
Max Exposure | 5,000x |
Release Date | April 2026 |
Book of Knight Hold & Win
Book of Knight Hold & Win is a medieval-themed slot released in September 2025, built on a 5×3 grid with 10 fixed paylines. It runs two parallel bonus paths from a single base game, giving players two distinct features to chase within every session.
The first path is a classic Book of free spins mechanic: landing 3 or more Book symbols triggers free games with a randomly selected expanding symbol that stretches across all five reels. The Book symbol doubles as both wild and scatter, paying out up to 200x the total bet on its own when five land. The second path is the Hold & Win feature, activated by six or more Shield symbols — which carry printed cash values — locking in place and triggering three respins that reset with each new Shield that lands. The two features are independent of each other, with the bonus buy option available to purchase direct access to either at 50x (Free Games) or 60x (Hold & Win) the total bet.
The game carries a 96.21% RTP and a 5,000x maximum win.
Spec | Detail |
|---|---|
RTP | 96.21% |
Volatility | Medium-High |
Paylines | 10 (fixed) |
Min/Max Bet | €0.10 / €50.00 |
Max Exposure | 5,000x |
Release Date | September 2025 |
Book of Dragon Hold & Win
Book of Dragon Hold & Win merges two proven slot formats into a single game: the book-style expanding symbol free spins mechanic and the Hold & Win cash collect feature. Three or more Book symbols trigger 12 free spins with a randomly selected expanding symbol that applies across all five reels. Separately, six or more Egg symbols (tiered across Golden, Silver, Bronze, and Wooden values) activate the Hold & Win sequence.
The dual-trigger structure gives this game a broader appeal than single-mechanic titles — free spins players and Hold & Win players both have a feature to chase. RTP is 96.21%, volatility is medium-high, and max exposure reaches 5,000x. A bonus buy option is included.
Spec | Detail |
|---|---|
RTP | 96.21% |
Volatility | Medium-High (4/5) |
Paylines | 10 |
Min/Max Bet | €0.10 / €50.00 |
Max Exposure | 5,000x |
20 Boost Hot
20 Boost Hot is Felix Gaming's standout entry in their fruit boost series and one of their most widely distributed titles. It operates on a 3-row, 5-column grid with 20 selectable paylines and a core mechanic that sets it apart from standard classic slots: the Line Boost feature allows players to manually assign a win multiplier of 3x, 4x, or 5x to a single chosen payline each spin, increasing that line's total bet contribution in exchange for multiplied returns on any winning combination it produces.
This gives players an active decision to make on every spin — a level of engagement unusual in classic-format games. RTP is 96.33%, max exposure is 1,000x, and the bet ceiling reaches €200, making it accessible across a wide range of bankroll sizes.
Spec | Detail |
|---|---|
RTP | 96.33% |
Volatility | Medium-High (4/5) |
Paylines | 20 (selectable) |
Min/Max Bet | €0.20 / €200.00 |
Max Exposure | 1,000x |
Bonuses Available at Slot Sites with Felix Gaming Games
Casinos featuring Felix Gaming slots offer the same core promotional structures found across the wider market — welcome deposit matches, free spin packages, reload bonuses, and cashback — but the terms attached to these offers vary considerably from operator to operator. How these bonuses apply specifically to Felix Gaming titles is what players need to verify before claiming.
Welcome Deposit Bonuses
The majority of casinos in our rankings offer a welcome deposit match of between 100% and 200% for new players, providing additional funds to explore the Felix Gaming catalog from the first session. The practical value of these offers depends on the wagering requirement attached. We consider 35x or lower to be player-friendly; requirements above 50x make the bonus mathematically difficult to convert into withdrawable funds, and players should factor this into their assessment.
Free Spins on Felix Gaming Titles
Some operators run free spin promotions specifically allocated to Felix Gaming slots, most commonly tied to It's a Joker or 20 Boost Hot given their lobby prominence. These offers range from 20 to 100 spins at a fixed stake, typically €0.10 or €0.20 per spin. Pay close attention to whether free spin winnings are subject to wagering requirements, capped in value, or restricted to the game they were awarded on.
Bonus Buy Eligibility
Several Felix Gaming titles — including Wild Bison Spirit Hold & Win and Book of Dragon Hold & Win — feature a bonus buy option that allows players to purchase direct access to the Hold & Win or free spins feature. This matters for bonus play because most casino bonuses explicitly prohibit the use of bonus funds to trigger bonus buy features. Players should confirm whether the casino's bonus terms allow bonus buy purchases before using promotional funds on these titles.
Reload Bonuses and Cashback
Regular players at casinos carrying Felix Gaming content can access weekly or monthly reload bonuses on subsequent deposits, and some operators offer cashback on net losses over a defined period. These ongoing promotions extend session value across the Hold & Win range, where variance between triggering features can produce longer dry spells that cashback helps offset.
What to Check Before Claiming
Promotional terms differ significantly across operators. Before claiming any bonus at a Felix Gaming casino, verify the following:
- Game contribution rate — confirm Felix Gaming titles contribute at 100% toward wagering, not a reduced rate
- Maximum bet during bonus play — most bonuses cap bets at €3–€5 per spin; exceeding this can void the bonus
- Bonus buy restriction — explicitly check whether the terms prohibit using bonus funds for bonus buy features
- Eligible titles — some free spin offers restrict play to specific games within a provider's catalog
For current, verified bonus terms and updated casino rankings, explore the operator reviews in the SlotsRank casino listings where each offer is reviewed against these criteria directly.
Other Software Providers to Play With
Players who enjoy Felix Gaming's focused mechanic approach — Hold & Win respins, classic fruit formats, and book-style expanding symbol slots — will find these four studios offer the closest comparable experience.
- Amatic Industries — An Austrian studio with deep land-based casino roots, making it Felix Gaming's closest structural peer in terms of studio heritage. Amatic specializes in classic fruit and card-themed slots with high RTP rates and minimal bonus complexity. Best for players who enjoy Felix Gaming's fruit boost catalog and prefer straightforward base-game play over feature chains.
- Booongo Gaming — The most direct mechanical parallel to Felix Gaming's Hold & Win range. Booongo's catalog is built around cash-collect respins with tiered jackpot structures (Mini, Minor, Major, Grand), matching the core mechanic found in Wild Bison Spirit and Book of Dragon. Best for players who want to explore a wider Hold & Win library with deeper jackpot tier variety.
- Spinomenal — An Israeli studio specializing in book-style expanding symbol slots and mythology-themed video slots, overlapping directly with Felix Gaming's Book of Anunnaki and Book of Dragon Hold & Win. Spinomenal offers higher production values and a larger catalog within the same mechanic family. Best for players who enjoy Felix Gaming's book slots and want more theme variety and higher max win potential.
- Wazdan — A Malta-based studio whose adjustable volatility settings cover the same risk range that Felix Gaming delivers through separate low, medium, and high volatility releases — but within a single game. Their Double Hit, Energy Saving Mode, and Big Screen features are unique UI innovations across the industry. Best for players who want Felix Gaming's volatility range without switching between titles.
Conclusion
Felix Gaming distinguishes itself through innovative mechanics and visually striking slot designs that blend traditional elements with modern gaming features. The developer excels in creating engaging bonus rounds and maintaining solid RTP rates across their portfolio, though their relatively limited game library may disappoint players seeking extensive variety. While their graphics quality impresses, some titles suffer from repetitive gameplay patterns that could benefit from more creative diversification.
Felix Gaming has established a respectable position within the iGaming industry, particularly among operators seeking reliable content with proven performance metrics. Their commitment to regulatory compliance and fair gaming practices has earned recognition from licensing authorities, though they remain a smaller player compared to industry giants. The developer's focus on quality over quantity has resulted in well-crafted games that perform consistently across different markets.
For comprehensive insights into Felix Gaming's complete slot collection and detailed performance analysis, explore SlotsRank's extensive slot game reviews and slot site reviews to make informed gaming decisions.
Frequently Asked Questions
Where is Felix Gaming based and when was it founded?
Felix Gaming was founded in 2016 in Sofia, Bulgaria, by three professionals from the land-based casino industry: CEO Bilyan Balinov, R&D lead Anton Mutov, and co-founder Dimitar Dimitrov. The studio's primary development office remains in Sofia, with a secondary operational presence in Malta.
Which Felix Gaming slot has the highest RTP?
Joker Heist holds the highest published RTP in the Felix Gaming catalog at 97.60%, well above the industry average of 95–96%. Among other widely played titles, It's a Joker sits at 96.98%, 40 Diamond Hot's top variant reaches 96.55%, and Book of Knight Hold & Win comes in at 96.21%.
Are Felix Gaming slots available on mobile?
Yes. Every Felix Gaming title is built in HTML5, ensuring full compatibility across desktop browsers, i OS, and Android without requiring a separate app. The studio optimizes touch controls and layout for mobile play, including portrait mode support across the Hold & Win range and the fruit boost series.
What is the Felix Stars jackpot network?
Felix Stars is Felix Gaming's proprietary jackpot network, active across select titles including versions of the Golden Fruits and Frozen Fruits series. Participating games display a Felix Stars badge in the casino lobby. Each spin contributes to a growing jackpot pool, with prize values and win probability configured by individual operators.
What is Felix Gaming's best-performing slot?
It's a Joker is Felix Gaming's all-time top performer, consistently ranking in the top 10 games at multiple licensed casino operators globally. It runs on a 3×5 grid with 5 paylines, delivers multipliers of up to 25x and up to 5 free spins per base game spin, and carries a 96.98% RTP.
How does the Hold & Win feature work in Felix Gaming slots?
The Hold & Win feature activates when a minimum number of special symbols — typically cash coins or Sun symbols — land on the reels in a single spin. Those symbols lock in position and three respins begin. Each time a new qualifying symbol lands, it locks and the respin count resets to three, with all accumulated values paid out when respins end.
What license does Felix Gaming hold?
Felix Gaming currently operates under a license issued by Anjouan Licensing Services Inc. The studio previously held a Curaçao Gaming Control Board license. Their slots are distributed through Alea and aggregation platforms including SoftSwiss and REEVO, whose operator partners hold their own jurisdiction-specific licenses.
Which Felix Gaming slots have a bonus buy option?
Several Felix Gaming titles include a bonus buy feature. Book of Knight Hold & Win offers two separate buy paths — Free Games at 50x the bet and Hold & Win at 60x. Book of Dragon Hold & Win and Wild Bison Spirit Hold & Win also carry bonus buy options. Most casino bonuses prohibit using promotional funds to trigger bonus buy, so players should check terms before claiming.