Thunderkick mobile slots come from an independent Stockholm studio founded in 2012, known for offbeat original art, no licensed brands and the Esqueleto Explosivo series, and you can play them inside UK casino apps on iPhone and Android. Here we cover who Thunderkick is, how its games vary from gentle to very volatile, how they look on a phone and how to find them.
Thunderkick is an independent studio, based in Stockholm since 2012, and makes only original, unbranded games.
It reaches many casinos as a Powered By partner of Relax Gaming.
Its games range from low volatility (Esqueleto Explosivo, 700x max win) to high (Pink Elephants 2, 10,000x).
UK versions have no bonus buy, no autoplay and a £5 or £2 stake cap depending on your age.
Founded
2012
Headquarters
Stockholm, Sweden
Ownership
Independent
GB licence
UKGC accounts 40165 and 41752
Catalogue
About 110 games, none branded
Best-known series
Esqueleto Explosivo
Thunderkick: an independent studio with its own look
Thunderkick has been making slots in Stockholm since 2012 and describes itself as 'breaking rules and setting standards' since then. Unlike many of the studios in a typical casino lobby, it is not owned by a larger gambling group. Reference listings show about 110 games, and none of them is based on a film, TV show or band; every theme is the studio's own.
Two companies hold the licences: Thunderkick AB and Thunderkick Malta Ltd. In Great Britain they are on the Gambling Commission register under accounts 40165 and 41752. Thunderkick also distributes games as a Powered By partner of Relax Gaming, which is one route by which its slots reach casino apps.
Item
Detail
Founded
2012
Base
Stockholm, Sweden
Ownership
Independent
Licensed entities
Thunderkick AB and Thunderkick Malta Ltd
GB accounts
40165 and 41752
Distribution
Direct and as a Powered By partner of Relax Gaming
Why Thunderkick slots look different on your screen
Thunderkick's art is the first thing most people notice. Skeleton mariachi bands, pink elephants, birds sitting on electric wires: the studio favours playful, slightly surreal characters drawn in a clean, bold style. On a phone that is a practical advantage, because strong outlines and bright colours stay readable when the reels shrink to fit a 6-inch screen.
Sound is a big part of the design too, with themed music that changes during features. If you play on the bus or late at night, the speaker icon in the game menu mutes it, and your phone's own silent switch or volume buttons work as well. Our casino app sound and vibration guide covers app-wide settings.
Thunderkick mobile slots from low to high volatility
Thunderkick's catalogue covers a wide range of risk, which makes it a useful studio for understanding volatility. Compare these four:
Slot
Layout
How it pays
Published RTP
Volatility
Max win
Esqueleto Explosivo
5 reels
17 paylines
96.0%
Low
700x stake
Birds on a Wire
5 reels
See game rules
96.1%
Medium
9,000x stake
Esqueleto Explosivo 2
5 reels
99 pay ways
96.13%
Medium
5,000x stake
Pink Elephants 2
6 × 4
4,096 ways
96.13%
High
10,000x stake
The RTPs are almost identical, yet the games feel very different. Esqueleto Explosivo caps its top prize at 700 times the stake, so more of its return is paid out as small, regular wins. Pink Elephants 2 can pay up to 10,000x, which means more of its return is locked up in rare features and dry spells are longer.
In pounds: with £20 at 20p a spin you get 100 spins on either game. On the low-volatility one you are more likely to see your balance move up and down gently. On the high-volatility one you are more likely to see a steady decline punctuated, occasionally, by a larger feature. The theoretical cost is about £3.87 to £4 per £100 staked on both; the difference is how bumpy the ride is. Over time, losing is the most likely outcome either way.
The Esqueleto Explosivo series on a phone
Esqueleto Explosivo is Thunderkick's signature series, built around a band of skeleton musicians. The original uses dropping symbols: winning skulls disappear, new ones fall into the gaps, and a multiplier rises with each consecutive drop. An exploding wild clears the symbols around it, which can set off further drops. This is a variation on cascading reels, and it plays out entirely on the reels, so nothing important is hidden in a side panel in portrait.
Esqueleto Explosivo 2 moved to 99 pay ways and a higher published top prize of 5,000x, with medium volatility. If you enjoy the first game's rhythm but want more variation, the sequel is the natural next step.
How Thunderkick games run in iPhone and Android apps
Thunderkick games are HTML5 and open inside the casino's app or mobile site. They are not separate apps, so you will not find them on the App Store or Google Play by themselves. When you tap a game tile, the app downloads the game files from the studio's servers, which is why the first launch is slower than later ones.
Portrait: most recent titles stack the reels above the controls; older ones may letterbox slightly.
Landscape: fills the screen on 5-reel games and can make paylines easier to see.
Dark mode: the game's own colours do not change with your phone's dark mode, but the casino app around it might. See display and dark mode.
Interrupted spins: if a call comes in mid-spin, the result is already decided on the server and shows when you return.
Thunderkick's own site currently features newer titles such as Bjorn, Hot Potato Battleground, Serpentico Smash, Midas Golden Touch: Thunder Pots, Bass Hunter, Temple of Akhet, Hammerblaze, Alice: Time Rift and 3 Wildos, with Greedy Pumpking and Shark Park listed as upcoming. Not every casino adds new games at the same time, so a title on the studio's site may not appear in your app yet. Check the rules screen of any new game for its RTP and volatility before you stake.
UK rules on Thunderkick slots in British apps
Thunderkick games served in Great Britain follow the same design rules as every slot here:
At least 2.5 seconds per spin, with no autoplay, turbo or slam-stop.
No bonus buy option, as feature buys are not offered to players in Great Britain.
A stake cap of £5 per spin from age 25 and £2 per spin for 18–24-year-olds.
Balance and net position shown at all times, and no celebration of a return below your stake.
Demo play only after the casino has verified your age.
Tap the search icon and type a game name such as Esqueleto Explosivo.
If the lobby has a Providers filter, select Thunderkick to see the whole range.
Check the logo on the loading screen to confirm the studio.
Save the game to favourites for faster access next time.
Some casinos list Thunderkick games under Relax Gaming because of the Powered By arrangement, so if the Thunderkick filter is missing, try searching by game name. More tips are in our finding games in a casino app guide.
Where to play Thunderkick mobile slots
Thunderkick slots are offered by UK-licensed casinos that choose to stock them, and not every app carries the full range, so search before you deposit. The apps below are licensed and list thousands of games; their offers are not linked to Thunderkick. 18+, terms apply.
None of these offers is tied to a Thunderkick slot. PlayOJO's 80 spins are on Big Bass Bonanza with no wagering, Coral's spins are on selected games, and 10bet's 100% match up to £25 has 10x wagering on slots within 3 days. 18+, T&Cs apply.
Significant terms: 18+. New UK customers (excluding Northern Ireland). First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. GamCare.org.uk
Read the PlayOJO reviewLicence: Skill On Net Limited, UKGC account 39326. Offer checked 5 October 2026.
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Coral reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New UK customers only. Select the casino welcome bonus at sign-up and make your first deposit within 7 days. 100% bonus up to £25. Wager the bonus 10x on slots within 3 days. Maximum bonus winnings £1,000. Bonus is not redeemable. Full T&Cs apply. GamCare.org.uk
Read the 10bet reviewLicence: Blue Star Planet Limited, UKGC account 43173. Offer checked 5 October 2026.
18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set limits. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
Is Thunderkick owned by a bigger company?
No, Thunderkick describes itself as independent and is not part of a larger gambling group. It has been based in Stockholm since 2012 and runs through two licensed companies, Thunderkick AB and Thunderkick Malta Ltd. It does distribute games as a Powered By partner of Relax Gaming, but that is a distribution arrangement rather than ownership. Many other studios in a typical lobby belong to groups such as Evolution or Playtech. Compare with our Relax Gaming and Evolution pages to see how different studios are organised.
Is Thunderkick licensed in the UK?
Yes, Thunderkick is licensed in Great Britain by the Gambling Commission, under accounts 40165 and 41752 for its two companies. Those licences allow it to supply games to UK casinos. You still play through a licensed casino, which holds your money and applies UK rules such as stake caps and age checks. You can search either account number on the Commission's public register. Our how to check a casino licence guide explains what the register shows, and safe casino apps covers what else to check.
What is the max win on Esqueleto Explosivo?
The published maximum win on Esqueleto Explosivo is 700 times the stake. That is low compared with many modern slots, and it goes with the game's low volatility: more of the return is paid out as smaller, regular wins rather than rare large ones. At a 50p stake, 700x is £350. The sequel, Esqueleto Explosivo 2, raises the published maximum to 5,000x and is rated medium volatility. Our Esqueleto Explosivo guide and the max win entry explain how these figures work.
Are Thunderkick slots low volatility?
Some are, but not all. Thunderkick's catalogue spans low, medium and high volatility. Esqueleto Explosivo is published as low volatility, Birds on a Wire and Esqueleto Explosivo 2 as medium, and Pink Elephants 2 as high. Their RTPs are all close to 96%, so the main difference is how the return is spread: frequent small wins on low-volatility games, longer dry spells and rarer bigger features on high-volatility ones. Choose based on how you want a session to feel and what you can afford. Our volatility and hit frequency entries explain more.
Can I play Thunderkick slots on Android?
Yes, Thunderkick slots run on Android phones and tablets inside any licensed casino app or mobile site that stocks them. There is no separate Thunderkick app: the games load within the casino's lobby. Install casino apps from Google Play rather than an APK file, because Google only allows real-money gambling apps in Great Britain from licensed operators it has approved. If the games are slow, update the app and make sure you have spare storage. Our Android casino apps guide covers installation and settings.
Why can't I find a new Thunderkick game in my app?
New Thunderkick games appear on the studio's site before every casino adds them, and some casinos never stock certain titles. Each operator decides which games to carry and when to launch them. Search by the exact game name first, then try the Providers filter. Because Thunderkick distributes through Relax Gaming, some apps list its games under Relax instead. If the game still does not appear, ask the casino's support team whether it is coming. Our finding games in a casino app guide explains search and filter quirks.
Does Thunderkick make branded slots?
No, Thunderkick does not make branded slots: reference listings show none of its roughly 110 games based on a film, TV series, band or other licensed brand. Every theme, from the skeleton band of Esqueleto Explosivo to the elephants of Pink Elephants 2, is the studio's own creation. That is unusual, as many large studios rely on licensed brands for some of their best-known games. It does not change how the games pay or which UK rules apply. Browse other studios and their styles on our slot providers hub.
Can I play Thunderkick demos without verifying my ID?
No, UK casinos can only offer demo or free-to-play slots after verifying your age, a rule in place since May 2019. Once your account is verified, some casinos offer demo versions of selected games, including Thunderkick titles where they stock them, while others offer real-money play only. A demo uses play money and shows the same features, so it is useful for learning how the drops and multipliers work. If the demo button is missing, finish your checks first. See casino app demo mode verification for details.
Gambling can be addictive. Free, confidential help is available 24 hours a day from the National Gambling Helpline on 0808 8020 133. Get support from GamCare or NHS gambling support, or block yourself from all UK-licensed gambling sites with GAMSTOP.
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