Novomatic slots reach online casinos through Greentube, Novomatic’s digital gaming division. Their RTP and bonus rules vary by game and version, so a familiar title does not guarantee the same payout settings or features.
Book of Ra deluxe awards 10 free spins with a special expanding symbol; Sizzling Hot deluxe has five paylines and no free-spins round. Newer Novomatic slot games such as Diamond Link Almighty Kraken use held prizes and a resetting spin counter. Free demos let you explore these bonus features with virtual credits, while availability for real-money play depends on the UK casino’s current game lobby.
UK casinos with Novomatic and Greentube games
Use our casino reviews to compare slot sites in the UK, then search their game lobbies for the title you want to play. A provider may appear under Novomatic or Greentube. The range of Novomatic slots offered by each casino can differ, so check the full title before opening an account.
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Novomatic slot demos: play for free
Free demos use virtual credits: there is no cash stake and nothing to withdraw. They are for adults aged 18 and over. Open the paytable while exploring a slot game so you can match the symbols on screen to the rules behind a payout.
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Book of Ra deluxe offers a useful example. The Book can substitute in a line win and also trigger the free spins feature. During the bonus, a separate selected symbol can expand. Following those two roles is more useful than judging the game by whether a short demo session finishes ahead. Demo results cannot predict what happens if you later play for real money.
A prize marked “100x line bet” pays £10 when the line bet is 10p. The multiplier applies to that line bet, even if your total stake across all paylines is £1.
Five Novomatic slot games to compare
Start with Sizzling Hot deluxe if you want to see how a slot pays without a free-spins round. Book of Ra deluxe adds an expanding-symbol bonus; the Win Ways edition changes the reel arrangement too. These video slots illustrate different ways to handle wins. Our selection of Novomatic and Greentube games compares those differences rather than claiming to rank the most popular Novomatic slots in the UK.
| Game | Layout | Main point of comparison |
|---|---|---|
| Book of Ra deluxe | 5 reels and 10 paylines | A special expanding symbol during free games |
| Book of Ra deluxe: Win Ways | Six main reels plus a top reel | Winning symbols disappear and replacements fall in |
| Sizzling Hot deluxe | Five reels, five paylines | Fruit-symbol line wins and Star scatters |
| Lucky Lady’s Charm deluxe | Five reels, up to 10 paylines | Wild doubling and a free-games multiplier |
| Diamond Link Almighty Kraken | Five reels, 25 paylines | Diamond prizes held through a resetting bonus counter |
Book of Ra deluxe: the selected symbol changes the bonus
Three or more Book symbols award 10 free spins in Book of Ra deluxe. A special symbol is selected for the bonus and can expand to occupy all three positions on a reel. The Book itself also acts as a wild symbol in ordinary line combinations.
That distinction matters when reading the paytable: the selected expanding symbol has its own bonus rules. This section concerns the five-reel deluxe game. Book of Ra deluxe 6 and the Win Ways release are separate editions, with different reel arrangements.
Book of Ra deluxe: Win Ways adds another layer
A win does not necessarily end the spin in this edition. The winning symbols are removed, and replacements fall into the spaces. Another winning combination can keep that sequence going across the six main reels and the additional reel above them.
Greentube’s Win Ways announcement describes 10 free spins for three bonus scatters, with five more for each additional scatter. A randomly selected expanding symbol remains part of the free games feature and can also cover positions on the top reel. It is a substantial change from the original deluxe layout, even though the artwork and name are familiar.
Sizzling Hot deluxe keeps the focus on line wins
Sizzling Hot deluxe is a fruit slot with the familiar symbols of a classic fruit machine. Fruit and Seven symbols pay along five win lines, while Star scatters can award a prize without following a line. There are no free spins in the standard deluxe slot game.
The absence of a bonus round makes the structure easier to follow, but it does not tell you how frequently a particular prize will land. Sizzling Hot deluxe 10 Win Ways is another release; its name should not be shortened to this game’s when comparing features.
Lucky Lady’s Charm deluxe: two kinds of multiplier
The Lady wild can double a winning combination when she substitutes into it. The free spins round has a separate multiplier: the classic deluxe format awards 15 free spins with a 3x multiplier when at least three Crystal Ball scatters appear.
Keep the trigger symbol and the wild separate when following a result. The crystal balls start the bonus; the Lady helps form line wins. As with Book of Ra, later editions carry extra wording in their titles. The five-reel deluxe rules should not be applied to a six-reel or Win Ways game.
Diamond Link Almighty Kraken: another diamond keeps the round going
With one spin left in Diamond Link, a new diamond brings the counter back to three. The diamond prizes already collected stay locked in place, so the next spin can add to the collection. Six diamonds trigger this feature in Almighty Kraken, with three spins to begin.
Greentube’s Almighty Kraken feature guide also describes Wild, Sticky and Colossal Spins. These add different actions to the round: multiplier wilds, held winning symbols or a giant symbol across the middle reels. The game has four jackpot awards, but their names alone do not establish that each prize is progressive.
From classic Novomatic games to newer slot series
The Book of Ra series shows how much can change around a familiar theme. Its expanding symbol survives into the Win Ways release, but the way the main game handles wins changes. Comparing the full titles gives you a better starting point than assuming all Egyptian-themed Novomatic games share one set of rules.
Diamond Link is another recurring feature family. Individual games add their own slot features around it, so learning one Diamond Link title does not explain every bonus in the collection. Our casino game provider guides cover other studios if you want to compare these mechanics with a different catalogue.
How are Novomatic and Greentube connected?
Greentube is the digital gaming division of Novomatic and became part of the group in 2010. That relationship explains why the same classic title may be associated with Novomatic’s machines and Greentube’s online games. Beyond video slots, Greentube’s online gaming catalogue includes table games, video poker and other casino content.
The UK Gambling Commission lists an active remote Gambling Software licence for Greentube GmbH, account 41020, checked on 1 October 2026. Your casino account sits with the operator whose terms govern registration, deposits and withdrawals. Its licensing details need to be checked separately.
RTP and payouts depend on the game version
There is no single RTP for Novomatic online slots. Greentube’s published Book of Ra deluxe specification lists several return settings. That document illustrates why a percentage quoted in a review cannot establish the configuration running at your casino.
Read the RTP in the information panel of the slot game you open. It describes a theoretical average over a very large number of plays, not the amount you should expect back from a particular deposit. Volatility concerns how wins are distributed; neither figure predicts the next bonus.
Check the unit attached to a payout as well. A prize expressed as a multiple of the line bet is different from one expressed as a multiple of the total stake. The Book of Ra specification distinguishes those units. Comparing headline maximum-win numbers without them can give a misleading impression.
For games with a growing shared prize, our progressive jackpot slots guide explains the format. A label such as Mini or Grand is not enough to identify the jackpot’s funding rules.
Where to play Novomatic slots online in the UK
If a provider filter returns nothing, try the other name: Novomatic or Greentube. Then search the exact game title. A Novomatic casino listing is a useful starting point, but it does not show which individual Novomatic titles are available. A worldwide release announcement describes a product; it does not confirm that every UK casino carries it or offers the same version.
Casino offers need a separate check. Promotional slot offers can exclude particular online slot games, even when those games appear in the lobby. Promotional free spins are awarded under the casino’s conditions, while a slot’s free spins round is triggered by its game rules. Check which title the offer covers, the value of each spin, expiry and any wagering requirement. An offer for one Book of Ra edition need not include the others.
Decide your spending limit before choosing a stake. If keeping to it becomes difficult, our responsible gambling guide explains tools and support.
Latest Novomatic and Greentube news
Novomatic slots FAQ
Are Greentube and Novomatic the same company?
Greentube is part of Novomatic and handles digital gaming content. The names are connected, but they describe different parts of the business. This is why online casino lobbies may use Greentube for games also associated with Novomatic.
Which are the best Novomatic slots to compare first?
Book of Ra deluxe and Sizzling Hot deluxe give you a clear contrast: one centres its bonus on an expanding symbol, while the other uses five-line fruit-slot play without free spins. Add Almighty Kraken if you want to explore held diamond prizes and a resetting counter.
Can I play Novomatic slots for free?
Where a demo is available, you can use virtual credits to explore these online slots. Demo winnings have no cash value. A demo listing also does not confirm that the same title is available for real-money play at a particular UK casino.
Is Book of Ra deluxe the same as Book of Ra deluxe: Win Ways?
No. The standard deluxe game has five reels and 10 paylines. The Win Ways edition uses six main reels, a top reel and falling replacements after wins. Check the full title before using a review’s rules.
Do all Novomatic games have the same RTP?
No. Games and configurations can differ. Use the return figure in the information panel for the version you are playing, rather than a provider-wide average or a percentage from a similarly named release.
Daniel is a content creator at Mr Win and has worked in the iGaming industry since 2012. With more than a decade of experience reviewing casino operators and bonuses, he focuses on safe play, licensing standards, and helping players find fair gaming sites.