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Novomatic and Greentube: Who Makes This Slot

In short: Novomatic owns the maths behind Lord of the Ocean and Greentube delivers it online. Greentube's own catalogue settles the split: the base game is tagged to Novomatic, while the sequel 10: Win Ways is tagged to Greentube.

Two company names get used interchangeably for this slot, and the catalogue belonging to one of them shows they are not the same thing. The base game is filed under Novomatic; the online delivery, the game servers and the sequel belong to Greentube.

Paytable screen carrying the Novomatic copyright line
The paytable inside the maker's own client, where the copyright notice in the corner names Novomatic rather than Greentube. Source: our own screenshot.
Game:
Lord of the Ocean (a Novomatic video slot, distributed online by Greentube)
Type:
Slot game
RTP as published:
Not one number but a set of versions, and this title documents that better than almost any other because its licensees disagree in public, in writing, inside the same regulated markets.
Max win:
Four different ceilings are published for this title, all by named licensed operators, and they do not agree.
Note: The maths belongs to Novomatic; the online build, the servers and the casino relationships belong to Greentube. The split shows up in Greentube's own catalogue, where the base game carries the company tag for Novomatic and the technology tag NovoSDK. British operators do not agree on which name to print: Unibet calls the supplier Novomatic Interactive, while Admiral's games API answers Greentube.

Each entry below names the source it came from, and says what that source actually proves. Some are read from a public register, some from the company's own catalogue record, and one is here because no register carries it at all.

1
Novomatic
company that owns the game maths
tagged as company 28 in Greentube's own catalogue record
2
Greentube
online distributor and game-server operator
serves this title from nrgs-b2b.greentube.com
3
NovoSDK
client technology
carries 728 of the 742 games in the Greentube catalogue
4
Game id 149
internal identifier at the studio
matches the gametwistId in the same catalogue record
5
Lord of the Ocean 10: Win Ways
the sequel
tagged to Greentube rather than Novomatic in that catalogue
6
Greentube Malta Limited
Maltese licensee, company C38281
authorisation MGA/CRP/120/2006, status Licensed
7
Greentube Alderney Limited
British licensee
Gambling Commission account 39050, one of six group accounts
8
NOVOMATIC AG
the name on the Greek register
manufacturer entry HGC-000004-MN, with no Greentube entry there
9
Spelinspektionen
Swedish regulator
software licences for two group companies, 1 July 2023 to 30 June 2028
10
Per-title laboratory certificate
the thing that does not exist publicly
absent from every register we checked

Which Name Belongs on the Game

Both names are right. They just do different jobs. Novomatic owns the maths and the brand. Greentube builds the online version, runs the servers and signs the deals with casinos. We opened a session on Greentube's own server to grab the paytable, and the small print at the foot of that screen reads Novomatic.

Five reels and three rows in the maker's own client
The game as Greentube's own server delivers it, captured on . Source: our own screenshot.

British operators split on this. Unibet writes Novomatic Interactive. Gamesys and Rank both write Novomatic. Admiral's games API answers Greentube for the very same title.

Three labels for one game. Each one is right on its own terms.

What the Catalogue Record Shows

Greentube puts out a catalogue file covering 742 games, and the entry for this one settles the question. It carries a company tag that the same file reads as Novomatic. It carries a technology tag of NovoSDK. It gives a volatility rating of 5 and an internal id of 149, and that id matches the one the game server uses.

Rules screen stating a theoretical return of 95.10%
The client states a return here, while the trade key-data table behind the login keys the same field by licence. Source: our own screenshot.

The sequel is filed differently. Win Ways carries a company tag of its own, and that tag is Greentube. So the credit really does move inside one family of games.

Where the Licences Actually Sit

The group spreads across at least six legal entities, and mixing any two of them up produces a false sentence. Greentube Malta Limited, Maltese company C38281, holds licence MGA/CRP/120/2006, a business-to-business permit the register lists with the status Licensed. Britain is where the group is widest: six separate Gambling Commission accounts, covering Greentube Alderney on 39050, Greentube GmbH on 41020, Greentube Gibraltar on 43091, Greentube UK on 48666, NOVOMATIC AG on 45352 and Novomatic Gaming UK on 53969.

We read the register entry for one of the six in full. Account 39050 runs five activities, all of them remote and all still current: bingo and casino from November 2014, gambling software from December 2014, and general betting on real and virtual events from March 2018. For the other five we took the account number and the status and stopped there, so the table below leaves those cells empty rather than guessing.

Six Gambling Commission Accounts in One Group

CompanyAccountLicence numberStatus
Greentube Alderney Limited39050039050-R-319315-020Active
Greentube GmbH41020041020-R-320549-008Active
Greentube Gibraltar Limited43091not readActive
Greentube UK Limited48666not readActive
NOVOMATIC AG45352not readActive
Novomatic Gaming UK Limited53969not readActive

Figures current as of ; the operator's live terms prevail.

Sweden lists game-software licences for two of those companies, running five years from July 2023. Greece registers NOVOMATIC AG as maker HGC-000004-MN. Greentube is not in that register at all.

The lesson is short. The name on a licence changes from country to country, so a sentence that picks the wrong one is wrong everywhere.

One Sanction on the Record

One of those six accounts carries a sanction, and it belongs here as plainly as the clean entries. On the Gambling Commission settled with Greentube Alderney Limited, account 39050. The company agreed a payment in lieu of a financial penalty of £1,000,000, plus divestment, costs and a public statement. The failings were in anti-money-laundering and customer-interaction controls between September 2022 and June 2023.

The same decision says the Commission found no evidence of money laundering or criminal spend, and that half of the sentence travels with the fine. The group's other five British accounts carry no regulatory action at all.

Three Things the Company Gets Wrong

The group's own site disagrees with the registers in three places. Each takes a minute to check. Its footer gives the Maltese licence to Greentube GmbH, while the regulator's own seal names Greentube Malta Limited. The footer also adds an issue date for that licence, and the Maltese register prints no issue date for any licence it lists. Its list of jurisdictions includes ADM, the Italian regulator, which licenses casino operators and keeps no register of game studios at all.

A fourth slip is smaller but points the same way. The list still names Schleswig-Holstein, a German regime replaced in 2021. It says nothing about the national body that took over, even though two group companies hold German operator permits today.

What No Register Will Confirm

Two claims about this game cannot be checked anywhere public. No lab publishes a per-title certificate for it. The certificate column on the maker's own page sits behind a trade login. Its public certifications page names four organisations, with no game and no number against any of them. The certificate pages at iTech Labs and eCOGRA answered 403 and 404 when we tried them. Greece runs the only public lab register we found, and it lists labs rather than the games they test.

Germany is the second gap, and it works the other way round. Its regulator licenses operators, not studios. So there is no German supplier licence to hold at all. The national whitelist prints company names, domains and dates. It prints no permit numbers. Anyone quoting a German licence number for a game studio is quoting something that was never published.

Key Terms Used on This Page

B2B licence
A permit to supply games to casinos rather than to players; Greentube Malta holds MGA/CRP/120/2006.
Account number
The Gambling Commission's identifier for a licensee, such as 39050 for Greentube Alderney.
NovoSDK
The client technology behind the group's online games, used by 728 of the 742 titles in its catalogue.
Game id
The studio's internal identifier; this title is 149, while Admiral's platform files the same game as 147.
Whitelist
Germany's published list of permitted operators, which names companies and domains but no permit numbers.

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