Thunderkick Sister Sites: Why a Games Studio Has None
Thunderkick has no sister casinos, and that is not a gap in our research. It is a games studio, not a gambling operator, so it does not run any player-facing casino sites at all. What people usually mean by a Thunderkick sister site is the list of UK-licensed casinos that carry its slots, and that is a very different thing. Below we explain the studio, name the kind of casinos where its games turn up, and clear up the licences behind the company. Thunderkick is operated by Thunderkick Malta Limited on UK Gambling Commission account 41752.
Thunderkick: Studio, Not Operator, and What Counts as a Sister
Reviewed by Emma JenkinsPublished: Jun 2020 · Last updated: June 2026
Why the usual question does not fit. A sister site is one of several casinos run by the same operator on the same licence. Thunderkick builds slots and licenses them to casinos. It does not take your deposit, hold your balance, or pay your withdrawal, so there is no second or third Thunderkick casino to compare. The honest answer to the sister question is none.
The Studio at a Glance
- What it is: an independent slot developer, founded in Stockholm in 2012 by former NetEnt staff.
- What it makes: around eighty-five in-house video slots, roughly one new title a month.
- Who runs it: a privately held company of about eighty people, led by chief executive Jan Lunde.
- Where to play it: at UK-licensed casinos that license its games, not on any Thunderkick-owned site.
Studio and Operator Compared
| Question | A games studio (Thunderkick) | A casino operator |
|---|---|---|
| Holds your money? | No | Yes |
| Takes deposits and pays out? | No | Yes |
| Runs player accounts? | No | Yes |
| Has sister casinos? | No, it builds games only | Often, on a shared licence |
| UK role | Supplies slots to licensed sites | Runs the site you log in to |
Where You Can Play Thunderkick Games
Because the studio sells its slots widely, its catalogue shows up across many of the larger UK casinos rather than on one home of its own. Well-known UK-licensed sites that have carried Thunderkick titles include Casumo, Unibet, 32Red and Mr Q. We name these only to show where the games tend to appear; they are separate companies on their own licences, not Thunderkick properties, and nothing here is an affiliate recommendation to sign up. If you do open an account at any casino, treat the bonus terms on their own merits, remembering that UK wagering is now capped at ten times and mixed-product bonuses are no longer allowed.
The Complete Picture: Company and Licences
Thunderkick runs through two related entities. The development company is Thunderkick AB in Sweden, while Thunderkick Malta Limited handles the regulated supply side from an office in Floriana. Both sit under the same brand and management; neither is a casino you can join.
- Thunderkick AB: the Stockholm studio, holding the UK Gambling Commission supplier licence numbered 40165.
- Thunderkick Malta Limited: the Maltese arm, licensed under number 41752 and by the Malta Gaming Authority.
- Other oversight: a Swedish Spelinspektionen permit, with games tested and certified by the independent lab Quinel.
Licences and Entities
| Entity | Role | Regulator and reference |
|---|---|---|
| Thunderkick AB | Game development, Sweden | UKGC supplier 40165; Spelinspektionen |
| Thunderkick Malta Limited | Regulated supply | UKGC 41752; Malta Gaming Authority |
| Independent testing | Fairness certification | Quinel laboratory |
Are There Any Thunderkick Sister Casinos?
No. Keep three ideas apart and the confusion clears. First, the studio itself, which makes the slots. Second, the casinos that license those slots, which are independent operators with their own owners and licences. Third, the studio family, meaning the Swedish and Maltese arms of Thunderkick, which are corporate siblings rather than gambling sites. None of those casinos is a sister of Thunderkick, and Thunderkick has no casino sister of its own.
The Thunderkick Review
We are reviewing Thunderkick as a slot maker, because that is what it is, and on that score it has a strong reputation. The studio built its name on small, distinctive games rather than licensed tie-ins, and it kept output steady at about a title a month. For players the practical point is simple: when you spot the Thunderkick name on a slot at a UK casino, you are getting a polished, original game from a respected developer.
The Games
The catalogue runs to roughly eighty-five video slots, all made in house. Standout titles include Esqueleto Explosivo, Pink Elephants, 1429 Uncharted Seas and Midas Golden Touch, each known for clean art and an unusual mechanic rather than huge progressive jackpots. The house style favours character and clever features over noise.
Return to Player and Volatility
Thunderkick slots tend to publish healthy return-to-player figures, broadly in the ninety-six to ninety-eight per cent range depending on the game and the version a casino chooses to run. Volatility varies by title, from gentle grinders to spikier high-variance releases, so it is worth checking the info screen of the specific slot before you play.
Where the Games Live
You will not find a Thunderkick casino, only Thunderkick games hosted by other operators. The studio sells to a long list of UK and European sites, so availability is wide. If a particular title matters to you, search for it within a licensed casino rather than looking for an official Thunderkick site, because none exists.
Fairness and Licensing
As a supplier the company is licensed by the UK Gambling Commission and the Malta Gaming Authority, and its games are tested by the independent Quinel lab. That matters because it means the maths behind each slot has been checked before a UK casino is allowed to offer it, which is a quiet but real layer of player protection.
Mobile and Build Quality
The slots are built in modern web technology and run directly in a mobile browser, so they scale neatly to a phone without a separate app. Load times are short and the controls are designed for touch first, which suits how most UK players actually spin.
How It Compares
Set against giants like NetEnt or Play n GO, Thunderkick is a smaller, more boutique outfit, and that is its appeal. It puts out fewer games but keeps a recognisable identity, so fans of its quirkier titles know what they are getting. As a studio to look out for on a casino lobby, it earns its place.
Key Facts
| Company type: | Independent slot games studio (not a casino operator) |
| Founded: | Stockholm, 2012, by former NetEnt developers |
| Chief executive: | Jan Lunde |
| Catalogue: | Around 85 in-house video slots |
| Typical RTP: | Roughly 96 to 98 per cent, varying by title |
| Sister casinos: | None, because it does not run casinos |
| UK supplier licence: | UKGC 40165 (AB) and 41752 (Malta) |
| Other regulation: | Malta Gaming Authority; Sweden; Quinel testing |
| Where to play: | UK-licensed casinos that license its games |
| Licence checked: | Supplier entry seen on the UKGC register, June 2026 |
| Our rating: | 8/10 |
Pros and Cons
In its favour
- A respected, independent studio with a clear creative identity rather than recycled licensed themes.
- Solid published return-to-player figures across most of the range, in the high nineties for many titles.
- Properly licensed as a UK supplier and tested by an independent lab, so the maths is verified.
- Games are widely available, so you can play them at plenty of established UK-licensed casinos.
Against it
- There is no Thunderkick casino, so you cannot play, deposit, or claim a bonus with the studio directly.
- A smaller back catalogue than the biggest studios, with fewer big-jackpot or branded titles.
- Game availability depends entirely on which casinos choose to carry it, so it varies site to site.
- As a supplier it has no say over the bonus terms or service of the casinos that host its slots.
Operator details last reviewed: June 2026 (last updated 9 June 2026)
Frequently Asked Questions
Does Thunderkick have any sister sites?
No. Thunderkick is a games studio, not a casino operator, so it does not run any casino sites and therefore has no sister casinos.
What is Thunderkick then?
It is an independent slot developer, founded in Stockholm in 2012 by former NetEnt staff. It designs video slots and licenses them to casinos rather than running its own.
Where can I play Thunderkick slots in the UK?
At UK-licensed casinos that carry the studio. Larger sites such as Casumo, Unibet, 32Red and Mr Q have featured Thunderkick titles, though availability changes over time. These are separate operators, not Thunderkick sites.
Is Thunderkick licensed in the UK?
Yes, as a games supplier. Thunderkick AB holds UK Gambling Commission supplier licence 40165 and the Maltese arm holds 41752, with additional Malta Gaming Authority and Swedish oversight.
Are Thunderkick games fair?
They are tested by the independent Quinel laboratory and must pass checks before UK casinos can offer them, so the return-to-player and randomness are verified.
What are the best-known Thunderkick slots?
Popular titles include Esqueleto Explosivo, Pink Elephants, 1429 Uncharted Seas and Midas Golden Touch, all known for distinctive art and inventive features.
Can I get a bonus from Thunderkick?
No. Bonuses come from casinos, not from the studio. Any offer you see applies to the casino hosting the game, and UK rules now cap wagering at ten times and ban mixed-product bonuses.
Our Verdict on Thunderkick
Thunderkick is an 8 out of 10 as a slot studio, and the most useful thing we can tell you is that it has no sister casinos to rank, because it does not run any. It builds well-made, original slots, holds the right UK supplier licence, and lets independent testers check its games, so seeing its name on a casino lobby is a good sign. To actually play, pick a UK-licensed casino you trust that happens to carry the studio, and judge that casino on its own terms.
New Sister Site rating: 8/10