SPINOMENAL
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Written by: Filip Gromovic Reviewed by: Nashon Khamala
Lovers of Greek mythology and expanding reels usually end up checking out Spinomenal free slots. With popular titles like the Demi Gods series, Majestic King, and Book of Rebirth, it’s clear to see what this developer is all about. These casino games are available instantly in browser demo mode, so you don’t have to download anything to explore them. If you like mythology themes, Hold & Hit features, and modern reel systems, free Spinomenal slots give you a swift way to test the developer’s biggest releases before choosing the ones that fit your style.
| Founded | 2014 by Lior Shvartz and Omer Henya |
| Headquarters | Tel-Aviv, Israel |
| Number of Games | 650+ |
| Game categories | Slots, Scratch Cards, Specialty |
| RTP range | 88%–96%+ |
| Licenses | MGA, UKGC, Romania, Hellenic Gaming Commission (Greece), Sweden, NJDGE (2026) |
| Testing | BMM Testlabs certified |
| Notable slots | Demi Gods series, Majestic King, Book of Rebirth, Story of Hercules |
Spinomenal was founded in 2014 by Lior Shvartz and Omer Henya, operating from Tel-Aviv, Israel. The studio is known for its long-running Demi Gods franchise, Hold & Hit mechanics, and lightweight HTML5 performance – most titles are under 3MB in size. The provider holds licenses from the Malta Gaming Authority, UK Gambling Commission, Hellenic Gaming Commission, and several other European regulators, and in 2026 expanded into the US market via the New Jersey Division of Gaming Enforcement. All games are independently tested by BMM Testlabs. With over 650 titles and one to three new releases per month, Spinomenal is among the more prolific studios in the online gaming industry.
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99/100
RTP: 96%
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Games: 200+
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98/100
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Games: 500+
95/100
RTP: 97%
Payout: 0–3 days
Games: 400+
96/100
RTP: 98%
Payout: 1–3 days
Games: 500+
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RTP: 97%
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Games: 400+
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97/100
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96/100
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RTP: 96.3%
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Games: 500+
NEW
95/100
RTP: 96%
Payout: 1–3 days
Games: 500+
Spinomenal was established in 2014 by co-founders Lior Shvartz and Omer Henya, and has quickly become known for building mobile-friendly online slot games with lightweight performance. While the company operates from Tel-Aviv, Israel, its game portfolio holds licenses from the UK Gambling Commission, Malta Gaming Authority, Romania, the Hellenic Gaming Commission (Greece), and Sweden, with the New Jersey Division of Gaming Enforcement added in 2026.
The studio is focused mainly on producing video slots with consistent monthly releases, and all titles are independently certified by BMM Testlabs. One reason many players are drawn to the brand is the long-running Demi Gods franchise, which has grown into several sequels and Hold & Hit variations over the years. Another factor is the emphasis on mobile optimization and the use of HTML5 technology that keeps file sizes small and load times fast.
Today, Spinomenal has developed and distributes hundreds of games across regulated markets while continuing to expand. Players who explore the company’s history often note how quickly it grew after the launch of its library in 2014, particularly through the Universe Concept – a connected character and theme system that gives franchises a more linked structure than typical slot portfolios.
Players looking to discover the best Spinomenal video slots usually begin with the mythology range. Below are some of the top games currently available in free demo mode, covering different mechanics, themes, and volatility levels. Each title features detailed graphics and can be tested without registration.
The fifth entry in the flagship Greek mythology franchise. Combines stacked wilds, sticky wilds, and a free spins bonus round on a medium-volatility setup. The base game plays across 50 fixed paylines with a maximum win of 300x. A solid starting point for players new to the series who want to understand the core mechanics before exploring the Hold & Hit variants.
The title that helped establish the franchise's reputation. This entry is well-regarded for its extra 50 free spins round with progressive win multipliers – a feature that can stack rewards significantly during a strong session. Players can trigger the free spins bonus from the base game when three or more scatters land on the reels.
The Hold & Hit variant of the series brings a distinctly different structure from the standard entries. Colossus icons and the hold-and-respin mechanic replace the traditional free spins approach, making this a medium-high volatility title. Released in October 2024, it suits players who prefer respin-driven bonus rounds over free spin accumulation, and the graphics reflect the studio's updated visual engine.
A wildlife and royal jungle-themed slot built around expanding reels and the Tree of Life perk. The expanding reel mechanic grows the play area during the bonus game, increasing the maximum win potential progressively. A strong representative of the studio's expanding-element mechanics outside of the mythology theme.
Set in ancient Greek mythology, this title delivers free spins with a randomly selected power feature and stacked wilds. Part of the broader mythology-connected Universe Concept, it shares thematic DNA with the Demi Gods franchise while offering a standalone experience built around the Hercules character and 243 ways to win.
An Egyptian-themed slot that plays on 10 free spins triggered by scatter symbols, with expanding icons during the bonus game. Book of Rebirth runs on 25 fixed paylines and offers a maximum win that scales with the expanding symbol mechanic. A good choice for players who want the studio's mechanical quality applied to a non-mythology theme.
One factor that differentiates the studio's special features from those of other developers is its focus on tiered mechanics and storytelling-driven franchises. Spinomenal is one of the few providers known for building long-running series that evolve over time, with the Demi Gods and Hold & Hit variations being the clearest examples. Users exploring these online slot games usually observe that the company prioritizes variety rather than a single signature mechanic.
One of the most recognized mechanics in slots by Spinomenal. Triggered when special symbols land, the Hold & Hit round locks qualifying symbols in place while the remaining reels respin. Colossus icons that appear during the round can fill multiple positions simultaneously, amplifying potential payouts.
Found in titles like Majestic King, this mechanic grows the play area during bonus rounds by adding rows to the reels. As the grid expands, the number of active ways to win increases, making the bonus round progressively more rewarding the more symbols land.
Present in the Demi Gods II free spins round, progressive win multipliers increase with each cascade or winning spin during the bonus. The longer the round runs, the higher the multiplier climbs, creating sessions where later spins carry more value than earlier ones.
A distinctive feature of the studio's library – characters and themes are sometimes connected across multiple titles. This gives the catalogue a more linked structure than typical portfolios and rewards players who explore multiple titles from the same franchise with a more coherent narrative experience.
A standard across most mythology titles including the Demi Gods series and Story of Hercules. Wild symbols land in stacks covering multiple positions on a reel, increasing the chance of completing multiple paylines from a single spin in the base game when they appear.
The studio regularly releases sequels and mechanical variants of its most popular titles. The Demi Gods series now spans multiple numbered entries plus Hold & Hit variants, each adding a layer to the original mechanics. This approach lets experienced players choose between classic free spins formats and newer respin structures.
Many casinos use these games in leaderboard events because titles are loaded quickly and rarely lag. The lightweight file sizes – most under 3MB – make them practical for tournament use where multiple players spin simultaneously, and fast loading ensures a consistent experience regardless of device or network quality.
Return to Player (RTP) refers to the percentage of bets placed on a game that is paid out to players as winnings over time. The average return rate for Spinomenal titles usually falls between 95% and 96%, although the exact percentage depends on the casino. Some variants – especially Hold & Hit releases – may go below 90%, while standard slots can exceed 96%.
The studio supports variable return configurations on many of its titles. This means that different operators can run different configurations of the same game. When looking for high-return slots, check the information table inside each game rather than relying on the published developer maximum.
Here is how volatility breaks down across the catalogue. The majority of titles sit at medium volatility, which means reasonably frequent bonus triggers without the extreme dry spells associated with high-variance slots.
| Game | RTP | Volatility |
| Demi Gods II | 96% | Medium |
| Demi Gods V | 95.74% | Medium |
| Demi Gods VI Hold & Hit | 89%–96% | Medium-High |
| Majestic King | 88.69%–96.31% | Medium |
| Story of Hercules | 88.69%–96.31% | Medium |
| Book of Rebirth | 88.69%–96.31% | Medium |
Spinomenal mobile slots were built with mobile devices as a primary consideration from day one. Every release uses HTML5 technology, allowing the games to run across iOS and Android devices, tablets, and desktop browsers without any downloads or plugins required.
One major benefit is performance speed. These games are known for their lightweight file sizes – most are under 3MB – which helps them load quickly even on older devices or weaker networks. The interface across all titles typically features large spin buttons, easy access to paytables, quick reel animations, and responsive layouts that adapt to both portrait and landscape orientations.
Many players who have tried this provider's mobile slots note that the fast-loading performance is comparable to the best developers in the market. This lightweight approach also makes the games practical for social casino platforms and casino tournament use, where fast loading and low lag are important for a consistent experience.
You can try Spinomenal slots for free directly through your browser without creating an account or downloading anything. Most demo pages just require that you pick a title and play for free. The Spinomenal online free no-download option lets you skip registration and get into the game quickly.
Demo games allow you to check volatility, learn how the bonus works, explore features, and understand the paylines – all without any real money risk. These are popular among players who want to test variance levels and bonus mechanics before moving to real gameplay.
Many sites now offer Spinomenal real money slots across regulated gaming markets, and several casinos that offer Spinomenal are also found on sweepstakes platforms. The studio has gained ground recently, with titles now available on major platforms including Stake, McLuck, and Playfame. Many online casino and sportsbook operators focus on mythology-themed slots due to player demand, while Hold & Hit titles are also widely available and popular with mobile users.
You will be required to create an account and complete a deposit to play with real money. Licensing by the New Jersey Division of Gaming Enforcement in 2026 also opens the studio's top slots to regulated US markets. Before registering on any platform, check for local legality, a valid operator license, availability of specific titles, and the active return settings the casino is running.
Filip Gromovic is a senior slots reviewer here at FreeSlots99 with over five years of experience evaluating the latest drops in the world of iGaming.
Being a slot fan himself, Filip approaches slot ratings just the way we like it – professionally, but also from a player’s standpoint.
That enables him to give his unbiased take on the slot’s features, gameplay and design, while only recommending top-tier releases to our readers.
More info on Filip Gromovic
Having served FreeSlots99 for more than 5 years as a senior content editor and reviewer, Nashon Khamala has extensive knowledge in game slots and iGaming.
His membership in the Editorial Freelancers Association helps him deliver content that reaches both editorial excellence standards and an engaging information level.
By using his expertise in slots games combined with player-focused analysis, Nashon delivers a professional evaluation of slot features and player experiences in his reviews.
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