Penguin King
Penguin King is a Malta-based online slot studio under Octoplay, audited by eCOGRA and iTech Labs, with roughly 100+ titles including Walrus King and Salmon King.
Its catalogue leans on animal and creature-themed reel slots, backed by licences across several regulated markets rather than a single flagship title.
- 10,000+ games and 174 live tables
- Cashback up to 20% total
- VIP welcome bonus of up to $60,000
iWild Casino is a Goodwin N.V. brand launched in 2021 under a Curacao license. The site offers 10,000+ games, 174 live dealer tables, fiat and crypto payments, cashback up to 20%, and two welcome packages: a standard 550% casino bonus and a separate VIP offer for high rollers.
- Huge game lobby with 11,000+ slots
- VIP cashback up to 30%
- Many payment methods
Gamblezen Casino combines a huge game library, strong promotions, many payment options, and VIP cashback in a Curacao-licensed platform launched in 2023.
- 42+ fiat & crypto currencies supported
- Regular slot tournaments
- VIP improves real conditions
Bizzo Casino is a Curacao-licensed online casino launched in 2021 with 5,000+ games, 20+ account currencies, app support, weekly promos, and withdrawal limits up to €/$4,000 per day. Payments and bonus terms can vary by country and promo version.
- Generous welcome bonus
- Casino and sportsbook together
- VIP tiers with cashback
Starda combines casino games and sports betting on the same platform and backs that up with a busy promotions calendar. The welcome package is larger than average, while cashback, Birthday bonus, VIP rewards, and sports bonuses make the account more useful over time instead of only at signup.
- 2-step welcome package
- Casino and sportsbook together
- VIP tiers with cashback
Starda combines casino games and sports betting on the same platform and backs that up with a busy promotions calendar. The welcome package is larger than average, while cashback, weekly reloads, VIP rewards, and sports bonuses make the account more useful over time instead of only at signup.
- 4-step welcome package
- Casino and sportsbook together
- VIP tiers with cashback
Starda combines casino games and sports betting on the same platform and backs that up with a busy promotions calendar. The welcome package is larger than average, while cashback, weekly reloads, VIP rewards, and sports bonuses make the account more useful over time instead of only at signup.
- Generous Welcome package
- VIP Transfer + cashback
- Casino + sportsbook in one
WooCasino is a casino and sportsbook platform launched in 2020 with fiat and crypto payments, a 4-step welcome pack up to $/€3,500 + 200 free spins, sportsbook offers, cashback, daily races, and a VIP program that can end with a Porsche 911.
- Crypto deposits with no minimum
- No withdrawal max limits
- Huge casino + sportsbook platform
Stake is a crypto-focused casino and sportsbook platform offering thousands of games, frequent tournaments, and a powerful VIP program.
- 6,000+ games from 130+ studios
- Welcome pack + weekly promos
- Fiat and crypto deposits from €10
National Casino is a Curaçao-licensed casino launched in 2021. The platform combines a very broad game lobby, regular weekly promotions, and a 15-level VIP system with comp-point exchange and cashback-style value through better conversion rates. It suits players who like slot-heavy play, recurring promos, and a cashier that supports both fiat and crypto options.
- Weekly free spins without deposit
- 40+ payment methods supported
- 15-minute VIP withdrawals
Impressario Casino is a creative slot-focused platform with a strong promotional culture and a distinctive brand identity. Instead of relying only on deposit bonuses, the casino runs numerous free-spin campaigns, tournaments, and community events. Combined with a compact VIP program and a wide selection of providers, it creates an experience designed to keep players entertained long-term.
- Casino + sportsbook in one account
- 150% casino welcome bonus
- Regular slot races & Drops events
20Bet is a dual-platform casino and sportsbook launched in 2020 under Curaçao license. It supports cards, e-wallets, and crypto deposits, runs casino and sports welcome bonuses, and features a multi-level VIP program. Suitable for players who enjoy switching between slots and betting without changing platforms.
- 12,200+ slots and massive provider mix
- Clear 30-level VIP ladder with fixed prizes
- Multi-currency cashier with e-wallet support
GranaWin is a modern Curaçao-licensed casino launched in 2024, focused on slots first, but also offering live and table categories. It supports dozens of fiat currencies and popular payment routes like cards and e-wallets, while promos are built around a welcome pack, weekly reload-style drops, and recurring tournaments.
Penguin King Casinos — Games, Fairness and Where to Play
Penguin King is a slot studio headquartered in St Julian's, Malta, operating under parent company Octoplay. Its games are certified for areas including Malta, the United Kingdom, Romania, Sweden, Canada, and the United States. It builds exclusively video slots in HTML5, and its games reach players through a network of licensed online casinos rather than through its own gambling brand. The question that matters before choosing a Penguin King slot is not how flashy the reels look, but who licenses and audits the studio behind them.
Who Is Penguin King
Penguin King's founding date carries a small discrepancy across sources: per our records, the studio's schema data lists 2023 as its founding year, while stake.com dates its launch to October 2022, crediting founder Carl Ejlertsson. Either way, Penguin King is a young studio, based in St Julian's, Malta, and operating as a dedicated slot label under Octoplay rather than as an independent publisher.
Within our catalogue, Penguin King is one of the top 5 providers in this selection, alongside Hacksaw, Spinomenal, Mascot Gaming, and AvatarUX. It ranks 80th out of 510 tracked providers by the number of casinos carrying its games. That places it well below the largest studios on the list — Hacksaw is carried by 119 casinos here — but ahead of niche names such as Paradise Gaming, present in just 5 casinos, and Jili, present in only 1. Mid-sized studios like Winfinity (56 casinos) and Wazdan (55 casinos) sit closest to Penguin King's tier, which is a useful reference point when judging how widely its slots have actually been picked up by operators.
Games and Signature Mechanics
Penguin King's portfolio includes slots, instant games, and jackpot slots, with roughly 100+ titles in total, according to stake.com's documentation of the studio. Its confirmed lineup includes Shaolin Panda Chaos Reels, Eternal Clash, Mutant Potatoes, Eggsponential, Walrus King and Salmon King. Reading the titles together, the studio leans heavily on animal and creature themes — pandas, walruses, salmon — mixed with more offbeat, cartoonish concepts like Mutant Potatoes and Eggsponential, suggesting a deliberate house style rather than a single recurring mechanic across the range.
No structured per-game specifications (RTP, volatility, reel layout) for these titles are published in the data available for this hub, so a comparison table by mechanic would be guesswork rather than fact. Players who want that level of detail should check the in-game information screen or paytable of the specific title inside a licensed casino, where those figures are disclosed for the exact game version in play.
RTP, Volatility and Fairness
Penguin King does not have a published studio-wide RTP range in the data reviewed here, so no single figure should be assumed to apply across its catalogue — RTP is set per game and, in some cases, per operator configuration, and is a theoretical return calculated over a long distance of spins, not a short-session guarantee. Independent testing is handled by eCOGRA and iTech Labs, both established RNG and fairness auditors used across the regulated slot industry.
Octoplay, Penguin King's parent company, holds a Malta Gaming Authority Corporate Group Critical Gaming Supply licence (MGA/CRP/981/2022) since 28 July 2023, and a Michigan Gaming Control Board Internet Gaming Supplier licence since 4 February 2025, according to Octoplay's own licensing documentation.
Separately, Penguin King itself carries licences tied to the Malta Gaming Authority (28 June 2023), the Romanian National Gambling Office (1 August 2022) and the UK Gambling Commission (22 March 2023), alongside listed permissions from the Swedish Gambling Authority, the Hellenic Gaming Commission, the Alcohol and Gaming Commission of Ontario, the Danish Gambling Authority and the Michigan Gaming Control Board. A supplier holding this spread of licences typically means its games have passed compliance checks in several regulated markets, not just one.
Where to Play Penguin King Games
The casinos carrying Penguin King's slots are listed in the selection above this article. Players in these casinos can typically use top payment methods like Mastercard, Visa, BTC, ETH, and Tether. Among the casinos in that selection, editorial ratings typically sit around 4.6 out of 5, with values spreading between 3.6 and 5 rather than clustering on one score, and a trust tier of 4 is the most common rating, applying to about 65% of the casinos here.
Licensing inside this selection skews toward one regulator: of the 55 casino records here with a licence on file, 45 are licensed by Curaçao, or 82%, noticeably higher than the 65% share Curaçao holds across our wider catalogue. Minimum deposits also run low — 42 of the 54 casinos with a published minimum deposit start at 10 EUR or less (78%), against 60% catalogue-wide, which matters more for testing a new studio's slots than the studio's own licensing does.
Ownership is also worth checking before treating two casinos as independent alternatives: of the 37 brands carrying Penguin King games in our catalogue, 8 operate under the RoyalPartners affiliate program, meaning they share the same underlying operator and terms rather than offering genuinely separate choices.
- Availability — confirm the specific Penguin King title is live at that casino, since portfolios differ by operator
- Licence — check which regulator covers the casino itself, separate from Penguin King's own licences
- Region — verify the casino accepts players from your country before registering
- Demo mode — where offered, test a title without a deposit before playing for real money
For players who prefer a wider mix of providers on one platform, the casino directory and the licensed casinos hub group operators by regulator rather than by studio.
Common Misconceptions
- "Hot" and "cold" slots — a Penguin King title does not run hot or cold based on recent spins; each spin is generated independently by the RNG audited by eCOGRA and iTech Labs.
- RTP as a short-session promise — a published RTP figure, where a casino discloses one, applies over a long distance of play, not to any single session or spin.
- More licences means better odds — Penguin King's spread across MGA, UKGC, ONJN and other regulators reflects compliance reach into different markets, not a difference in payout mechanics between regions.
- Similar themes mean identical volatility — titles sharing an animal or creature theme, such as Walrus King and Salmon King, are not guaranteed to share the same risk profile; each game's mechanics are set individually.
How These Casinos Differ
One parameter that genuinely separates the casinos carrying Penguin King games is how many countries each one accepts players from.
| Casino | Countries Accepted |
|---|---|
| Tsars | 247 |
| Thunderpick | 244 |
| Gamblezen | 235 |
| ViciBet | 224 |
| 20bet | 193 |
| TonyBet Casino | 24 |
The gap runs from 247 accepted countries at Tsars down to 24 at TonyBet Casino, so geographic reach should be checked per casino rather than assumed — a player ruled out at one operator may still be accepted at another carrying the same Penguin King titles. Currency support tells a similar story: 20bet accepts 49 currencies, Ivibet, SafeCasino and GranaWin accept 48, and Starda accepts 13, while TonyBet Casino handles as few as 5, so the choice of where to deposit can matter as much as the choice of game.
Verdict on Penguin King
"Penguin King is a young, single-format slot studio worth playing for its creature-themed reels and multi-regulator backing — not for a catalogue depth it hasn't built yet."
Penguin King suits players who want licensed, audited slots with a recognisable animal-and-creature house style, and who are comfortable checking per-game RTP and volatility inside the game itself rather than relying on a studio-wide figure. It is a less obvious pick for players hunting a single flagship title or a very large, established catalogue, since its footprint of roughly 100+ games and 37 carrying casinos is modest next to studios positioned higher up the ranking, such as Hacksaw.
Gambling is entertainment, not a way to make money or fix finances. Set deposit and time limits, take regular breaks, and use self-exclusion tools if play stops feeling like fun. Licensed operators provide these tools — using them is a sign of control, not weakness. Learn more on Responsible Gambling →
Update history
- Sep 1, 2026 — Added studio background, licensing footprint, fairness auditors and casino-country comparison for Penguin King
Penguin King – FAQ
In which casinos can I play Penguin King slots?
Penguin King's slots appear at a number of licensed casinos in the selection above this article, including operators such as Stake and Bizzo Casino; availability of a specific title still varies by casino.
What is Penguin King's typical RTP?
No studio-wide RTP range for Penguin King is published in the data available here; RTP is set per game, so it should be checked in the in-game paytable of the specific title before playing.
Are Penguin King's games fair, and who audits them?
Penguin King's games are tested by eCOGRA and iTech Labs, two independent labs commonly used to audit RNG fairness in the licensed slot industry.
How many games does Penguin King have?
Penguin King's catalogue runs to roughly 100+ slot titles, according to available provider documentation, with confirmed names including Shaolin Panda Chaos Reels, Walrus King and Salmon King.
How does Penguin King differ from other slot studios?
Penguin King is a slot-only studio operating under parent company Octoplay, ranking 80th of 510 providers tracked in our catalogue by the number of casinos carrying its games — smaller in reach than studios like Hacksaw, which appears in 119 casinos here.
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