Founded in 2012, Endorphina is a Prague-based B2B game studio that focuses on developing online slot machines for regulated markets.
Over the years, the company has grown from a smaller niche provider into a well-established name with a portfolio of more than 200 GLI-tested and ISO-certified titles, combining mathematically solid game models with visually polished designs.
Endorphina operates under a Type 1 gaming services licence from the Malta Gaming Authority (MGA/B2B/404/2017) and holds a growing number of local licences and certifications, including approvals in markets such as Romania, Italy, Denmark, Slovakia and others.
In practice, this means its games can be offered by licensed operators across dozens of regulated jurisdictions while meeting local technical, security and fairness requirements.
From a product perspective, Endorphina is best known for its slot portfolio, which ranges from classic fruit machines to more experimental titles with modern features and higher volatility.
Games such as Cyber Wolf, Power Balls, 2022 Hit Slot, Hell Hot 100 and many others have helped position the studio as a provider that mixes traditional slot formats with contemporary themes, risk profiles and bonus mechanics aimed at more experienced slot players.
| Overview of Endorphina | |
|---|---|
| Founded | 2012 |
| Number of Games | 205+ |
| Game Types | Slot Machines |
| Monthly Game Releases | 2 – 3 |
| RTP Model | Fixed RTP (usually 96%) |
| Max Win Range | 500x – 10,000x |
| Volatility Model | Low, Medium, and High |
| Testing Labs for Fairness | GLI (Gaming Laboratories International) / iTech Labs |
| Licenses | Anjouan, MGA, ONJN, HGC (+several more) |
| Awards Won | Multiple |
| Website | https://endorphina.com/ |
| Contact | mail@endorphina.com / +420 222 564 222 |
| Headquarters | Prague, Czech Republic |
Game Portfolio
Endorphina’s game portfolio consists entirely of slot machines, ranging from simple three-reel classics to more complex video slots with modern mechanics and advanced math models.
With more than 200 titles released since 2012, the studio has built one of the more diverse libraries in the mid-tier provider segment, with new games typically launched two to three times per month.
A defining characteristic of Endorphina’s slots is the range of volatility levels they offer. Many of their games are built around medium to high volatility, catering to players who prefer less frequent but potentially more rewarding outcomes.
At the same time, the company continues to produce a number of low-volatility classic slots for players who prefer steadier gameplay. This breadth allows Endorphina to appeal to a wide audience without leaning too heavily into any single style.
Visually, the studio covers a broad range of themes including mythology, adventure, retro fruit machines, seasonal releases, and more stylized contemporary concepts.
While the graphical approach varies by game, many Endorphina titles emphasize crisp illustration, clean interfaces, and vibrant color palettes rather than cinematic animation.
Their sound design tends to match this style — supportive and theme-appropriate without overshadowing gameplay.
Slot Mechanics and Features
Most Endorphina slots follow traditional reel layouts such as 5×3 or 3×3 formats with paylines, although the studio regularly experiments with alternative structures and special mechanics. Common gameplay features found in their portfolio include:
- Free spins with expanding or special symbols
- Multiplier features, often tied to bonus rounds or wild symbols
- Stacked or expanding wilds
- Hold and Win–style bonus rounds
- Risk/Gamble feature, where players can attempt to double winnings by selecting a higher card than the dealer
- Bonus games, ranging from simple pick-and-win rounds to more dynamic bonus modes depending on the title
- Bonus Buy options, available in many modern releases, allowing players to purchase direct entry into the main bonus round
Endorphina does not produce crash games, table games, live casino titles, or arcade-style products. The studio maintains a strict focus on slot content, refining its math models and gameplay systems within this vertical.
RTP and Payout Structure
Endorphina publishes a single RTP value for each slot, and this number typically sits close to 96%, which is broadly considered a high RTP for slots.
To clarify, the company does not produce their slots with different RTP settings that casinos can choose from, which many other game studios do. This provides consistency for players, as the RTP listed on the game is the same regardless of the casino where it is offered.
The studio has publicly stated that RTP is calculated based on the theoretical performance of each title using millions of simulated game rounds, and that this value represents the long-term expected return under its mathematical model.
Max win potential varies significantly across the portfolio. Many of their classic-style slots feature lower ceilings, while modern titles frequently offer payouts between 1,500x and 5,000x the bet.
Some recent releases extend up to approximately 10,000x, placing them within a competitive range compared with other mid- to high-volatility providers.
However, these payout levels do not reach the extreme maximum wins found in certain ultra-high-volatility titles from studios like Nolimit City or NetEnt that can pay 100,000x or more.
💡 Note: A small number of older titles (including Satoshi’s Secret) may display RTP ranges in external listings due to historical testing formats, but modern Endorphina releases all use a single fixed RTP value.
Popular Games
While Endorphina does not publish an official ranking of its most popular slots, several titles have gained strong visibility across online casinos and are frequently highlighted by the company. Below are six well-known examples.
| Joker Ra Sunrise | |
|---|---|
| RTP | 96.07% |
| Max Win | 5,000x |
| Volatility | High |
| Format | 25 paylines |
| Release Date | April, 2024 |
| Cyber Wolf | |
|---|---|
| RTP | 96.05% |
| Max Win | 5,000x |
| Volatility | High |
| Format | 10 paylines |
| Release Date | April, 2022 |
| Chance Machine 100 | |
|---|---|
| RTP | 96.07% |
| Max Win | 3,000x |
| Volatility | Medium |
| Format | 100 paylines |
| Release Date | July, 2020 |
| Book of Vlad | |
|---|---|
| RTP | 96.04% |
| Max Win | 5,000x |
| Volatility | High |
| Format | 10 paylines |
| Release Date | August, 2022 |
| Hell Hot 40 | |
|---|---|
| RTP | 96.04% |
| Max Win | 500x |
| Volatility | Low |
| Format | 40 paylines |
| Release Date | October, 2021 |
| Power Balls | |
|---|---|
| RTP | 96.12% |
| Max Win | 3,000x |
| Volatility | High |
| Format | Win anywhere |
| Release Date | February, 2025 |
Engagement Tools for Online Casinos
Endorphina does not currently provide operator-level promotional tools such as network tournaments, progressive jackpot systems, missions, or retention engines that casinos can activate across multiple games.
Unlike some providers that supply built-in promotional frameworks, Endorphina’s offering is centered entirely around the slot experience itself.
Because promotional tools are not part of the provider’s product suite, online casinos typically rely on their own internal systems to run campaigns, tournaments, free-spin promotions, or reward programs featuring Endorphina’s slots.
This means that while Endorphina’s games are frequently included in casino-hosted events and competitions, these activities are created and managed by the casino rather than being native to the provider’s technology.
Endorphina’s focus on self-contained game design—rather than external promotional mechanics—allows the studio to concentrate on mathematics, volatility structures, bonus modes, and thematic creativity within each individual slot.
Awards & Industry Recognition
Endorphina has seen significant growth in recent years and has been repeatedly recognized for its slot development, innovation, and overall contribution to the iGaming industry.
The company has earned awards across multiple regions, including Europe, Africa, and Asia, which reflect Endorphina’s growing presence in both regulated and emerging markets.
2024 Awards
- Best Online Casino Provider in CEE – GamingTECH CEE Awards
- Slots Provider of the Year – AffPapa iGaming Awards
- Best Game Provider – Millionaires Gaming Africa Awards
2023 Awards
- Best Platform Provider – SPiCE India Awards
- The Best Enterprise in the Field of Gambling Games – Baltic and Scandinavian Gaming Awards (BSG)
- Best Customer Experience Innovation – MiGEA (Malta’s Gaming Excellence Awards)
- Best FTN Game Soundtrack – BFTH Arena Awards (for the slot “Crispy Horses”)
2022 Awards
- Best Slots Provider – SiGMA Europe Awards
- Best Game Provider of the Year – Ukrainian Gaming Week (UGW) Awards
- Rising Star in Baltic Online Casino Technology – BSG Awards
- Developer of the Year – SPiCE India Awards
- Customer Service Excellence – SlotsWise Awards
Earlier Notable Awards
- Best Game Developer – Login Casino Awards 2021
- Best Online Slot – Login Casino Awards 2019 (for “Mystery of Eldorado”)
- Product of the Year – Entertainment Arena Expo 2015
License and Certificates
Endorphina operates as a B2B casino game supplier and holds several key licenses that allow the company to distribute its slot portfolio in regulated markets.
In addition to formal licensing, many of its games are certified by local authorities or approved testing labs to meet jurisdiction-specific technical requirements.
Primary Licenses
- Malta Gaming Authority (MGA): Holds a Critical Gaming Supply License (MGA/B2B/404/2017), allowing Endorphina to provide Type 1 gaming services in MGA-regulated markets.
- ONJN Romania: Licensed as a Class II supplier, permitting the distribution of approved games to Romanian-licensed operators.
- Hellenic Gaming Commission (HGC): Holds an A1 Suitability License as a certified manufacturer and distributor of gaming software.
- Anjouan Gaming Board: License obtained in 2025 to support expansion into additional international markets.
Certified and Approved Markets
Beyond its core licenses, Endorphina’s games are certified for operation in a wide range of regulated jurisdictions. These approvals typically involve independent testing and compliance checks rather than a standalone supplier license.
Certified markets include:
- Argentina
- Bulgaria
- Colombia
- Croatia
- Denmark
- Estonia
- Italy
- Latvia
- Lithuania
- Portugal
- Slovakia
- Spain
- Switzerland
Endorphina is also compliant with the technical standards required for distribution in Germany and the Netherlands through licensed partner operators.
Fairness and RNG Certification
All Endorphina games undergo independent testing to verify mathematical fairness and RNG integrity. Certifications are conducted by internationally recognized laboratories, including:
- Gaming Laboratories International (GLI)
- iTech Labs
These organizations validate that RTP values, random number generation, and payout behavior meet regulatory requirements and operate according to the stated game specifications.
Security Certification
- ISO 27001: Endorphina holds ISO 27001 certification for Information Security Management, a key requirement for entering many regulated markets and demonstrating a high standard of data protection and operational security.
Casinos That Work With Endorphina
Endorphina partners with a wide network of licensed online casinos, and its games are distributed globally through operators that meet strict regulatory and technical requirements.
The provider’s longstanding presence in regulated markets has helped its slot portfolio become well established across many reputable platforms.
As always, we recommend playing at casinos that demonstrate high levels of safety, transparency, and fair business practices. Here are several reputable casinos that we have reviewed and rated highly, all of which offer Endorphina’s slot portfolio:
How We Source Information
All information on this page is based on verifiable, authoritative sources to ensure accuracy and transparency. Our research process includes:
- Official provider documentation such as licensing pages, press releases, product catalogs, and regulatory statements.
- Gambling authority registers including the MGA, ONJN, HGC, and other publicly accessible regulatory bodies.
- Independent testing laboratories (e.g., GLI, iTech Labs) and their published certifications where available.
- Cross-checking technical details such as RTP consistency and the availability of promotional tools when provider data is incomplete or unclear.
- Direct communication with the provider when clarification is needed regarding features, certifications, or product updates.