A 26,000-employee company, and two casinos that carry any of it
Novomatic describes itself on its own corporate site as one of the world’s largest gaming technology groups: about 26,000 employees, roughly €3.6 billion in 2025 revenue, and gaming equipment exported to more than 130 countries. Its digital subsidiary Greentube holds a UK Gambling Commission software licence and a Malta Gaming Authority authorisation. Set against that scale, the finding from checking Ireland’s nine partner casinos is almost anticlimactic: only 21Bit and Wild Fortune showed a Novomatic-branded game at all, and Book of Ra was not among them.
That gap is worth sitting with rather than explaining away. A company this large is not obscure; it is simply built around a different distribution channel than the one this site’s readers use.
Novomatic the group, and Greentube the part that actually reaches a browser
Novomatic was founded in 1980 and is headquartered in Gumpoldskirchen, Austria, according to its own corporate page. Its business is described there as spanning slot machine and cabinet manufacturing, casino and gaming-venue operation, and lottery systems, with roughly 2,000 venues run worldwide. Online casino content is a smaller line inside that structure, carried by a subsidiary rather than the parent brand itself.
That subsidiary is Greentube, and its own history page traces it back further and separately: launched in 1998 as Dürrschmid & Reisinger OEG with a 3D sports title called Ski Challenge, rebranded Greentube Internet Entertainment Solutions AG in 2000, and folded into the Novomatic Group in 2010. Greentube is now based in Vienna and describes itself as “the NOVOMATIC Digital Gaming and Entertainment division,” with additional offices listed in Graz, Las Vegas, Nottingham, Ljubljana, Bratislava, Waalwijk, Belgrade, Malta, Vancouver and Athens. It is Greentube, not Novomatic AG directly, that holds the online gambling licences and supplies the digital game catalogue.
Two regulators, stated plainly
Greentube’s own site lists a Remote Gambling Software licence from the UK Gambling Commission under account number 41020, and a Malta Gaming Authority Type 1 Gaming Services authorisation, number MGA/CRP/120/2006, dated 1 March 2023. Both are the kind of licence this site treats as the current trust benchmark under how we rate, since Ireland’s own online casino category under the Gambling Regulation Act 2024 has not opened for applications yet, with remote gaming expected in 2027.
That framing cuts both ways here. Greentube’s licensing is exactly what an Irish player should want to see behind an online slot studio; the question this guide actually answers is whether that licensed content shows up at the casinos this site reviews, and the answer for seven of the nine partners is no, at least not visibly.
Greentube’s own about page also lists proprietary platform products alongside the games themselves: Plurius for server-based gaming, plus Mynt and novoSDK as integration tools it offers to operators, and a service line it calls Greentube Pro. None of that is content a player interacts with directly, but it explains why Greentube pitches itself to casinos as more than a game supplier; it is also selling the infrastructure a casino uses to run server-based and land-based-style gaming online. That B2B breadth is a different business from the studio-versus-studio comparison a slots guide usually makes, and it is part of why Greentube’s public game list reads shorter than its corporate presence would suggest.
Book of Ra, Sizzling Hot, and the titles that never turned up
Greentube’s own games page names Book of Ra deluxe, Sizzling Hot deluxe, Lucky Lady’s Charm deluxe and Reel King as its signature slots, alongside branded series such as Diamond Link and Diamond Mystery. None of them come with a published RTP on that page; Greentube describes themes and features but stops short of a return-to-player figure, which is why none appears in this guide either.
| Title (per Greentube’s own games page) | Description on greentube.com | RTP published |
|---|---|---|
| Book of Ra deluxe | Ancient-Egypt exploration theme, the studio’s best-known title | Not published |
| Sizzling Hot deluxe | Classic fruit-machine format, sevens and bells on five reels | Not published |
| Lucky Lady’s Charm deluxe | Clover and horseshoe-themed classic slot | Not published |
| Reel King | Traditional reel-slot format | Not published |
None of these four appeared at any of the nine partner casinos checked for this guide. Not once. What did appear, at two of them, were different titles entirely.
Well of Riches and 4 Gold Lanterns: what’s actually on offer
21Bit’s own site lists Novomatic among its top providers, naming Well of Riches and 4 Gold Lanterns Hold & Win as examples when checked on 3 September 2026. Wild Fortune’s site showed the identical pairing under its own Novomatic listing the same day, which suggests both casinos are drawing from the same aggregated content feed rather than negotiating separate Novomatic catalogues. Neither game is one of the four signature titles Greentube foregrounds on its own site, and Book of Ra did not surface on either casino’s page.
The 21Bit review and the Wild Fortune review are the two starting points on this site for anyone specifically chasing Novomatic content, with the honest caveat that “Novomatic content” here means Well of Riches and its stablemates rather than the classics the brand is known for.
The seven that showed nothing, or couldn’t be checked
Nomini’s own provider directory, which lists more than a hundred studios by name, does not include Novomatic or Greentube; a Sizzling Hot-titled game did appear elsewhere on Nomini’s site, but since Novomatic is absent from its provider list, that title belongs to a different studio’s similarly-themed game rather than to Greentube. Playzilla’s dedicated providers page returned a 404 when opened for this check. MegaRush’s homepage listed Relax Gaming, Play’n GO, Pragmatic Play and NetEnt with a “more” indicator, so Novomatic’s presence there is neither confirmed nor ruled out. JackpotCity’s visible provider list named Games Global, OnAir Entertainment, Pragmatic Play, Hacksaw Gaming and Blueprint Gaming, with no Novomatic among them.
LeoVegas, Betway and 888casino could not be checked at all: each served a Germany-specific licence notice or redirected to a German-market domain when opened from this side in September 2026, the same pattern already logged on this site’s live casino guide for the same three brands. Their Novomatic coverage, if any, stays unverified rather than assumed absent.
A company built for the cabinet floor, not the browser tab
A short digression, because it explains the pattern rather than just describing it. Novomatic’s own figures lean heavily land-based: about 2,000 venues operated directly, hardware sold into more than 130 countries, a business built over four decades around physical cabinets rather than browser-based slots. Greentube exists to translate that catalogue online, but a company that size does not need every casino aggregator to carry its full library the way a digital-native studio does; it can be selective about distribution deals, and that selectivity shows up exactly as thin, patchy coverage like the pattern found here.
It also means Novomatic’s brand recognition and its online distribution run on different timelines. Book of Ra became a household name through arcades and betting shops across Europe well before most of this site’s partner casinos existed, and that reputation is still doing marketing work today even where the actual game cannot be found. A player recognising the name from a betting shop years ago is not proof it sits in a specific online lobby now, and the two should not be assumed to travel together.
Where that leaves an Irish player specifically after Novomatic
If Novomatic or Greentube content is what you’re after, 21Bit and Wild Fortune are the only two of the nine partners where this site could actually confirm it, and even there it is Well of Riches rather than Book of Ra. For anyone whose interest was specifically the classic titles Greentube’s own site puts front and centre, the honest answer today is that none of them turned up anywhere in this check, and there is no partner on this list worth recommending on that basis alone.
This is worth re-checking rather than filed away as settled. Distribution deals between studios and casino aggregators shift without any public announcement, and a title absent in September could be live by Christmas, or the reverse. The date on this page is the useful part of it, not just the finding.