Novomatic Slots Review: Book of Ra, Greentube & Classic Gameplay

Novomatic Slots: Editor's Comment

Novomatic is not a typical online-first slot studio. It built its reputation on land-based cabinets and gaming halls, and that heritage shows in its game design: straightforward mechanics, recognisable symbols, and a focus on reliability rather than novelty for its own sake. The company's own product pages describe an "industry-leading range of proven video slot classics, new highlights and internationally popular player favourites" (NOVOMATIC Slot Games).

For Irish players, the practical reality is that Novomatic's online slots are usually encountered through Greentube, the group's interactive division. Wikipedia notes that Novomatic acquired a controlling stake in London-based Greentube in 2010, and that Greentube is "the main online publisher of already established Novomatic slot games" (Novomatic: Wikipedia). That distinction matters: a game may carry Novomatic branding but be delivered to an online casino through Greentube's platform.

The catalogue is broad, spanning platforms such as CoolFire II-s, GGA, ImperaLine and NOVOLINE. Titles include the long-running Book of Ra family, fruit-themed games like 25 Amazing Hot and 5 Amazing Hot, and newer additions such as Book of Ra Treasure Scarabs. This is a provider with depth, not a one-hit wonder.

What we like about Novomatic's approach is that it does not pretend to be something it is not. These are not high-volatility, Megaways-style thrill rides. They are games built for players who value clarity, familiar symbols, and a steady rhythm. The trade-off is that some titles feel dated compared to modern online releases, and the online availability of specific games can vary significantly by market and operator.

What We Liked

• A deep catalogue of proven titles, with a broad range of games listed on the official slot games page.
• Clear land-based heritage that translates into uncluttered, easy-to-follow gameplay.
• The Book of Ra series remains a recognisable and widely referenced slot family.
• Greentube provides a dedicated online distribution channel for the group's games.
• Official product information is published directly by Novomatic, making it easier to verify game details.

What is Novomatic?

Novomatic AG is an Austrian gambling technology company founded in 1980 by Johann Graf. Its headquarters are in Gumpoldskirchen, Lower Austria. The company describes itself as "one of the largest gaming technology companies in the world" with a turnover of more than EUR 3.6 billion in 2025, locations in around 50 countries, and exports to more than 130 states ( NOVOMATIC: Winning Technology ). NOVOMATIC: Winning Technology

Wikipedia records that Novomatic operates about 2,000 casinos and other gaming facilities in about 50 countries, many under the Admiral Casino brand, and also produces slot machines and other technology for the gaming industry. As of 2021, it had about 21,000 employees and annual revenue of €1.8 billion. The company expanded into online gambling in 2010 by acquiring a controlling stake in Greentube, and in 2018 completed the purchase of 52% of Australian gambling equipment maker Ainsworth Game Technology for around €300 million.

For players, the key takeaway is that Novomatic is a full-service gaming group; it makes cabinets, games, platforms and jackpot systems, and it also operates casinos and online gambling through subsidiaries. Its slot content is therefore designed for both land-based and online environments, with Greentube handling much of the interactive side.

Novomatic Slots At A Glance

The table below summarises verified facts about Novomatic as a provider. It does not list RTP, paylines or volatility for individual games, because those figures vary by title and version and are not published in the sources reviewed here.

Note that the company's own pages give slightly different export figures: "more than 130 states" on the main site and "more than 70 states" on the global locations page. This guide reports both rather than choosing one. The product catalogue is a snapshot of the official catalogue at the time of writing and may change as games are added or retired.

Novomatic Slot Catalogue and Game Styles

Novomatic's slot catalogue is diverse, but several themes recur. The Book of Ra series is the most recognisable, with Egyptian-themed games featuring expanding symbols and free-spin mechanics that have been widely imitated across the industry.

Fruit-machine style games form another pillar, following the classic format of fruit symbols, simple paylines, and a focus on line wins rather than complex bonus rounds. These games appeal to players who want a direct, uncluttered experience.

The catalogue includes games built for different cabinet platforms. The platform filter on the official page (CoolFire II-s, GGA, ImperaLine, NOVOLINE) reflects the fact that Novomatic designs for multiple hardware and software environments, not just online play.

For Irish players, the practical point is that not every Novomatic game will be available at every online casino. The catalogue is large, and operators choose which titles to offer based on their own licensing and market focus. Checking a specific casino's game lobby is the only reliable way to confirm whether a particular Novomatic title is available.

How Novomatic Slots Work

Novomatic slots generally follow standard slot mechanics. The core loop is familiar: choose a bet, spin the reels, and match symbols on active paylines. Many titles use a fixed number of paylines, while others allow players to adjust the number of active lines. Exact configurations vary by version.

Bonus features in Novomatic games tend to be straightforward. Free spins are common, often triggered by three or more scatter symbols. Expanding symbols, a hallmark of the Book of Ra series, can turn selected symbols into full-reel wilds during free spins, creating the potential for larger combinations. Wild symbols substitute for other symbols to complete winning lines.

It is important to understand that RTP, volatility and maximum win figures are game-specific and version-specific. A general explanation of RTP is that it represents a long-run theoretical average return to players, not a prediction of what will happen in any individual session. Novomatic does not publish a single RTP figure for its entire catalogue, and players should check the in-game information panel or the operator's game rules for the exact version they are playing.

There is no strategy that can guarantee a win on any slot, and no game becomes "due" for a payout. The outcome of each spin is determined by a random number generator, and the odds are fixed for the version being played.

Novomatic Slot Features

Across the catalogue, several feature types appear regularly. These are general observations based on the game descriptions and platform information published by Novomatic, not a claim that every title includes every feature.

• Free spins: Triggered by scatter symbols, often with an expanding-symbol mechanic that can turn a chosen symbol into a full-reel wild for the duration of the feature.
• Wild symbols: Substitute for regular symbols to complete winning combinations. In some games, wilds can appear stacked or expand during bonus rounds.
• Gamble feature: Some Novomatic titles include a risk game where players can attempt to double a win by guessing the colour or suit of a hidden card. This is optional and carries additional risk.
• Progressive jackpots: Novomatic operates jackpot systems, and some games are linked to progressive prize pools. These are separate from the base game and have their own rules.
• Multi-platform design: Games are built for platforms including CoolFire II-s, GGA, ImperaLine and NOVOLINE, which means the same title may appear in different forms depending on the environment.

Feature availability varies by title. A fruit-themed game like 25 Amazing Hot will not have the same bonus structure as a Book of Ra title, and a game designed for a land-based cabinet may have different features when adapted for online play.

Where to Play Novomatic Slots

Novomatic's online slots are distributed through Greentube, and they appear at a range of online casinos that hold the necessary licences for their markets. Players should check that any casino they use holds the appropriate authorisation for their jurisdiction. GRAI licensing

Because Novomatic does not operate a direct-to-consumer online casino in Ireland, the games are accessed through third-party operators. Availability varies: some casinos carry a broad selection of Novomatic titles, while others focus on different providers. The best approach is to check the game lobby of a licensed casino and search for the specific title you want to play.

For players who want to try games without staking real money, some operators offer demo versions. Our free demo slots page explains how demo play works and what to look for. Demo mode uses virtual credits and does not involve real-money gambling.

It is worth noting that Novomatic's land-based presence, including Admiral Casino venues in the UK and other markets, is separate from its online distribution. A game being available in a land-based venue does not guarantee it will be available online in Ireland.

Other Slot Games You Might Enjoy

If you are interested in Novomatic's style, you may also want to explore other providers with a similar focus on classic mechanics and recognisable themes. Our slot provider directory covers the major studios, and the following guides may be useful:

• Microgaming slots: another long-established provider with a broad catalogue.
• Play'n GO slots: known for the Book of Dead series, which follows a similar Egyptian theme to Book of Ra.
• Classic slots: a guide to 3-reel and fruit-machine style games.
• Book of Ra slot review: a closer look at one of Novomatic's most recognisable titles.