Majestic White Rhino
- RTP
- 96.31%
- Volatility
- Medium
- Reels
- 5
- Lines
- 25
- Theme
- Africa
Provider
Spinomenal
- Founded
- 2014
- Games in catalogue
- ~800
- Signature style
- Huge catalogue, wide RTP spread
Spinomenal is an Israeli studio founded in 2014 that has grown into one of the largest catalogues on this site – roughly 800 titles, built at a release pace few competitors attempt. Its strength is distribution and localisation: the games are lightweight, translated across dozens of languages and currencies, and they turn up in operator lobbies from Western Europe to Latin America. Its weakness is consistency, and that needs stating up front.
Game Style
There is no single defining mechanic. Spinomenal covers a broad range of volatility and themes, and organises much of the catalogue into interconnected series – the studio markets this as its Universe concept, where families of games share characters, symbols and feature structures across dozens of titles.
The other structural habit is seasonal content. Easter, Christmas and Halloween editions of existing games are released every year, which is unusual at this scale and explains why several titles in our own selection carry holiday names. They are not novelty one-offs; they are a permanent production line.
Signature Mechanics
The recurring engines are conventional, reused heavily, and easy to recognise once you have played a few:
- Book mechanic – the expanding-symbol free spins structure, which Spinomenal has deployed across a very large number of titles.
- Hold & Hit – the studio’s hold-and-respin format, with cash symbols locking and filling a grid toward jackpot tiers.
- Synched Reels – adjacent reels linked to show identical symbols.
- Power Spin – a side bet that upgrades the base game with extra wilds or improved symbol distribution.
- Buy Feature – direct purchase of the bonus round, available on most modern releases.
Licensing and Fair Play
Spinomenal’s regulatory coverage is genuinely broad: licences and certifications include the Malta Gaming Authority, the UK Gambling Commission, Spain’s DGOJ, Sweden’s Spelinspektionen, the Netherlands’ KSA, Romania’s ONJN and the Hellenic Gaming Commission in Greece. For a studio of this age that is a strong list, and it means the games are cleared for markets that test each title individually.
The returns are the problem. Published RTP across the catalogue spans roughly 88% to 97.9% depending on title and configuration, and our own sample runs from 92.00% to 96.31% – Wild Easter Gifts at 92.05% is the lowest figure anywhere on this site, sitting alongside titles in the normal range. There is no house standard to fall back on. With this supplier, checking the information screen is not a precaution; it is the only way to know what you are playing.
Games Worth Knowing
Beyond the five titles below, the catalogue’s anchors are its long-running series. The Demi Gods line now runs to six numbered entries and is the studio’s most recognisable family. Majestic King and the wider majestic-animal series are its most widely distributed games. Book of Muertos and Story of Hercules are the cleanest examples of the book mechanic in the library, and Wolf Fang spawned a franchise of its own. Picking within a series matters here, because returns vary between entries that look nearly identical.
Mobile Play and Demos
The games are HTML5 and deliberately small – many load in under three megabytes, which is a real advantage on a weak connection and part of why the studio does well in emerging markets. Free demos are available across the catalogue, and given the RTP spread they are worth using not just to test the game but to read the information screen before betting.
What the Numbers Say
This needs stating plainly: RTP across our five games runs from 92.00% to 96.31%. Wild Easter Gifts at 92.05% is the lowest figure anywhere on this site, and it sits alongside titles in the normal range. With this supplier the published return has to be checked game by game, because there is no house standard to fall back on.
Worth browsing for the sheer volume of themes and the quality of the licensing. Worth checking the RTP screen before every session.
Popular Spinomenal Games
Queen of Shadows
- RTP
- 92%
- Volatility
- Medium
- Reels
- 5
- Lines
- 25
- Theme
- Card Suits
Wild Easter Gifts
- RTP
- 92.05%
- Volatility
- Medium
- Reels
- 5
- Lines
- 40
- Theme
- Easter
Book of Easter Wonders
- RTP
- 95.8%
- Volatility
- High
- Max win
- 1000000
- Reels
- 5
- Lines
- 100
- Theme
- Animals
Book of Xmas 2
- RTP
- 95.9%
- Volatility
- High
- Max win
- 500000
- Reels
- 5
- Lines
- 10
- Theme
- Book of
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Common Questions
What is Spinomenal known for?
A large, rapidly expanded slot catalogue – around 800 titles – with strong distribution and localisation across many licensed markets, organised into interconnected game series rather than standalone releases.
Is Spinomenal a licensed provider?
Yes, and unusually broadly for a studio founded in 2014. Its licences and certifications include the Malta Gaming Authority, the UK Gambling Commission, Spain’s DGOJ, Sweden’s Spelinspektionen, the Dutch KSA, Romania’s ONJN and the Hellenic Gaming Commission.
Why do Spinomenal RTPs vary so much?
Because the studio has no single house standard and ships games in multiple configurations. Published returns across the catalogue span roughly 88% to 97.9%. In our own five-game sample the range is 92.00% to 96.31% – a four-point spread within one supplier. Read the information screen for every title, every time.
What is the Universe concept?
Spinomenal’s name for its interconnected series: families of games that share characters, symbols and feature structures across dozens of titles. It makes the catalogue easier to navigate once you know a family, but it also means near-identical-looking games can have materially different maths.
Why are there so many Easter and Christmas versions?
Seasonal reskins of existing games are a permanent production line at this studio, not occasional novelties. They typically reuse a proven engine with new artwork – which also means the return can differ from the original title the artwork is borrowed from.
Is Spinomenal safe to play?
In the regulatory sense, yes – it is certified in markets that test titles individually, including the UK and Sweden. The caution is commercial rather than technical: some titles are priced well below the market average, so the risk is paying a poor return by accident, not being cheated.
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