Online slot machines: who builds it, who holds the till

Anyone opening an online slot machine has two different parties in front of them, even if they see only one. The first is the studio that built the machine: the file, the tables, the graphics. The second is the company that holds the till, that is, the one you open the account with, that asks for the documents and that decides how much can be withdrawn. In our library of a hundred operators, closed on 26 August 2026, the builders surveyed are five hundred and forty-eight, while the counterparty of an account is always one and one only. This page separates the two, because almost every comparison between sites mixes them up.

The builder and the till: two parties, a single screen

An online slot machine does not belong to the site you open it on. Thirty-three operators out of a hundred publish the list of studios whose titles they host; putting those lists together gives five hundred and forty-eight distinct names. Twenty-six lists out of thirty-three contain Endorphina, the same number contain Pragmatic Play, twenty-five contain Hacksaw Gaming. They are the same suppliers sold to several houses.

The consequence is that two lobbies can contain exactly the same online slot machine and yet be very different relationships. The machine does not change its behaviour according to the site’s address; what changes is the verification clause, the withdrawal cap, the list of refused countries and the company in whose name the licence number is held. Our comparison looks at these four things, and the inventory of builders is instead in the page dedicated to game providers.

Five hundred and forty-eight builders, a single counterparty

It is worth lining up the two numbers. Five hundred and forty-eight distinct studios appear on thirty-three lists. Two hundred and sixty-four of those names appear on a single list, fifty-eight on ten lists or more, twenty-four on at least seventeen, that is, on more than half of the published lists.

On the other side, for sixty-nine records out of a hundred we have the name of the company in whose name the licence number is held. That is fifty-four distinct companies for sixty-nine brands. The number of counterparties you meet by opening an account is one, always, and it is almost never the one written on the sign.

In three cases out of sixty-nine the company name repeats the brand: Metaspins N.V., Windice Group Limited and Bets Entertainment N.V. In the other sixty-six the name on the door and the name on the contract have nothing in common. It is not a flaw in itself, it is simply the information you need to have to hand if one day you have to write to somebody: how that distance behaves in a dispute is told in the page on the dispute with a foreign operator.

When the same till runs several online slot machine halls

Fifty-three distinct licence numbers cover the hundred records. Nine of those numbers belong to more than one brand, for a total of twenty-four brands. The largest group is ALSI-202508056-FI2, in the name of Novatrix SRL, shared by Oshi Casino, PlayAmo, Slotum, Winz.io and Bitkingz. Three brands — 7Bit Casino, KatsuBet and Mirax — sit on OGL/2024/1307/0748 of Scores55 Tech B.V. Another three — Rolletto, Goldenbet and Velobet — sit on OGL/2024/1798/1048 of Santeda International B.V. Another three again — Betriot, Casinoly and Zet Casino — sit on OGL/2023/103/0067 of Rabidi N.V., a number that shows as revoked in the register.

For a player, the reading is this: opening an account at two twin brands does not double the counterparties, it leaves them at one. The graphics may be different, the catalogues of online slot machines may have different lists, but the party that assesses the documents and pays is the same. Anyone splitting a balance between two brands believing they are diversifying is in fact not diversifying.

There is also the case where the registers do not agree with each other. Thirty-nine brands out of a hundred have a valid entry in the Anjouan register; for seven of them there is in parallel an active entry in the Curaçao register, with a different number and company. Thunderpick appears as Paloma Media B.V. in one register and Napier Ltd in the other. Playbet.io appears as Bitx Operations N.V. and as Aurevia Digital Ventures Ltd. We do not choose which entry is the right one: we note that there are two.

When the builder is the house itself

Twenty operators out of a hundred carry the label «own games»: part of the catalogue does not come from an external studio but is produced by the operator. For those titles no list of providers will help make a comparison, because the builder and the till are the same. Twenty-one operators carry the label «provably fair», which describes a way of publishing the result of a round; this too is a declared characteristic, not a measure we have verified.

The most interesting case is when the two labels are added to the absence of a list of studios. Stake, for example, does not publish a list of providers in our files, has a single country on its list of refusals — the United States — and at clause 4.8 reserves the right to request documents at any time, including on any withdrawal operation. Anyone looking for an online slot machine signed by a well-known studio, on sites of this kind, does not find the row they are looking for: not because it does not exist, but because it is not published.

The cap is on the till, not on the machine

No online slot machine imposes a withdrawal limit. The limit is imposed by the till, and only fourteen operators out of a hundred write it down. The range is enormous: from Oshi Casino’s 4,000 euros a day (clause 12) and Instant Casino’s (clause 8.1) to Bitcasino.io’s 1,000,000 USDT a week (clause 6.10). In between sit Rocketpot’s 5,000 dollars a month (clause 11.5), PlayAmo’s 7,500 euros a week (clause 12), Wild Fortune’s 15,000 euros a month (clause 11.8), Wild.io’s 100,000 dollars a week (clause 9.6).

Verification works the same way: forty-nine operators have a legible clause, and only five write a figure. Bitcasino.io, Sportsbet.io and Livecasino.io state 2,500 euros or the equivalent in cryptocurrency, Rocketpot 2,500 dollars, Empire.io 2,000 USDT. All five add that further checks may take place below that threshold as well.

A single operator in the library publishes a payment processing window: Vave states a maximum of three working days at clause 8.1, fourteen days for handing over documents at 8.7 and, above 50,000 USDT, payment in instalments over a period reaching thirty days at 8.8. One out of a hundred means that anyone promising payment times on a table of twenty rows is filling nineteen boxes with something they have not read.

Sixty-seven halls that do not say who builds

Sixty-seven operators out of a hundred do not publish any list of studios, or we were unable to read it. It is the majority, and it does not coincide at all with the worst part of the library. Among the seven operators that go above eight out of ten, four have no list of providers in our files: Cloudbet with 8.5, Wild Fortune with 8.3, Shuffle and Rakebit with 8.0. The other three have one: DuckDice with nineteen studios, Rainbet with thirty-three, Windice with forty-four.

This is the most direct proof that the catalogue and the score are independent quantities. A site may say nothing about who built its online slot machines and still take the maximum score on the licence number, on the verification clause and on the currencies; another may list a hundred and fifty studios and have a revoked number. That is why the «list of providers» component is declared in our formula but today is worth zero points: with thirty-three lists out of a hundred, turning it into a score would mean rewarding whoever published one more page, not whoever behaves better.

Anyone who instead wants to know what those thirty-three lists say, studio by studio and site by site, will find the full count in the page on slot providers.

On a small screen the reading changes, not the game

An online slot machine on a phone is the same file with an adapted interface: the behaviour of the game does not change, what changes is how much you manage to read. The clauses that count — the verification number, the cap’s period, the list of countries — are in long pages, and on a five-inch screen they scroll badly and are easily skipped. It is a reading problem, not a gaming one, and that is why we deal with it separately in the page on mobile casinos.

It is worth adding a figure that puts the proportions back in place: sixty-two operators out of a hundred carry at least one descriptive label, and the most frequent are «live tables» with forty-seven records and «sports betting» with forty-three. The labels tell you what is inside a site. None of them says anything about how that site behaves when you ask for a balance back.

How we compare two identical online slot machines

If the machine is the same, the comparison necessarily shifts to the till. The order we follow is this, and it is four rows.

1. Does the licence number exist, in which register does it appear and with what status? Fifty-six operators out of a hundred have a confirmed number, seven declare a licence that we did not confirm in the register, five have a revoked number, thirty-two have no number read.
2. Is the verification clause citable with a reference? Of forty-nine legible clauses, twenty-two carry the clause number, twenty-two are described without a reference, five contain a figure.
3. Is there a written withdrawal cap, and over what period? Fourteen out of a hundred.
4. Is there a list of refused countries? Thirty-eight out of a hundred. The Italian code appears in only one of those thirty-eight lists, Crashino's.

When these four rows are filled in, the choice between two lobbies hosting the same online slot machine becomes an informed choice instead of a graphic preference. The complete comparison, with the scores out of ten points and the boxes left empty, is in the table of the migliori casinò Bitcoin. For the catalogue side, that is, for the question of which studios are found where, the starting point is the page on online slots.