CRUKS vs. Interstate Treaty on Gambling: The Decisive Difference for German Players

The core difference is geographical: CRUKS is the central exclusion system of the Netherlands, while the Interstate Treaty on Gambling 2021 sets the legal framework in Germany. An exclusion in CRUKS does not automatically apply in Germany and vice versa. The systems of the Kansspelautoriteit and the Joint Gambling Authority of the States (GGL) are technically and legally separate. German players are subject solely to the GlüStV 2021 and the OASIS database.

Basic Definitions: What are CRUKS and the Interstate Treaty on Gambling?

To understand the terms CRUKS and Interstate Treaty on Gambling, one must grasp the geographical and legal separation. Players encounter these terms because international providers often hold licenses in multiple European markets. The assumption that there is a unified European system is incorrect. These are two independent national regulatory frameworks.

CRUKS: The Dutch Central System

CRUKS stands for "Centraal Register Uitsluiting Kansspelen". It is the nationwide player exclusion database in the Netherlands. The Kansspelautoriteit, the Dutch gambling regulator, manages this register. Its task is clear: it requires all licensed providers to check a player's status before account opening or any deposit.

CRUKS has no automatic effect in Germany. Anyone listed in this Dutch register does not automatically end up in the German player exclusion database. The systems are separate because the Kansspelautoriteit and the German state authorities do not maintain a real-time database connection. The protection mechanism is strictly tied to the player's residence and the provider's licensing. Anyone who registers in CRUKS will be blocked from all legal online gambling offers in the Netherlands. The Kansspelautoriteit enforces this as a central element of youth protection and addiction prevention.

The Interstate Treaty on Gambling 2021 as the German Legal Basis

The Interstate Treaty on Gambling 2021 (GlüStV 2021) is the law that newly regulates the organization and distribution of gambling in Germany. It came into force on July 1, 2021, and laid the foundation for the Joint Gambling Authority of the States (GGL), which has been acting as the central regulatory authority since January 2023. The objectives are defined: combating gambling addiction, protecting minors, channeling gambling behavior into regulated channels, and curbing the black market.

To achieve these goals, the Interstate Treaty on Gambling 2021 mandates technical measures. This includes a central limit database that enforces a monthly deposit limit of 1,000 euros across all licensed providers. In parallel, there is the player exclusion database OASIS. Players can register themselves or be excluded by order of the authorities. The Joint Gambling Authority of the States strictly monitors compliance and only issues licenses to providers that technically implement these protection mechanisms.

The regulatory chain is clear: the Interstate Treaty on Gambling 2021 empowers the Joint Gambling Authority of the States. This authority maintains the White List of permitted providers and imposes sanctions for violations. This differs from the Dutch model, although both systems use similar instruments such as exclusion databases and deposit limits.

Why the Confusion Frequently Occurs

The confusion regarding the difference between CRUKS and the Interstate Treaty on Gambling arises because many international providers hold licenses in both markets. Players see similar self-exclusion queries during registration and assume a unified European system. However, CRUKS and the German player exclusion database are national isolated solutions.

Another factor is the similarity of the regulatory structures. Just as the Joint Gambling Authority of the States in Germany monitors compliance with the GlüStV 2021, the Kansspelautoriteit in the Netherlands does so for the local law. Since both authorities use comparable instruments such as the limit database or exclusion registers, the boundaries blur in perception. The legal separation remains in place: anyone playing in Germany is subject to the GlüStV 2021 and the oversight of the GGL, regardless of registration in the Netherlands.

Jurisdiction and Geographical Scope Compared

The main difference lies in geographical jurisdiction. CRUKS is the central exclusion system of the Netherlands, while the GlüStV 2021 forms the legal basis for Germany. Both systems protect players, but operate independently. An exclusion in one country does not automatically lead to a block in the other, as the Joint Gambling Authority of the States and the Kansspelautoriteit do not maintain a real-time database connection.

Scope of Application of the Interstate Treaty on Gambling 2021

The Interstate Treaty on Gambling 2021 (GlüStV 2021) is the central regulatory framework for public gambling in Germany. It came into force on July 1, 2021, and establishes the legal basis for the Joint Gambling Authority of the States (GGL), which has been functioning as the central regulatory authority since January 2023. The treaty aims to curb the black market by allowing legal alternatives for virtual slot machines, online poker, and sports betting under strict conditions.

Providers require a permit from the GGL to offer their services in Germany. The GGL maintains a so-called White List with all concessioned providers. Only these operators are legally permitted to distribute sports betting or slots to players residing in Germany. The focus is on player and youth protection as well as the prevention of addiction and crime. From a regulatory perspective, it is crucial that the GlüStV 2021 provides specific measures for each form of gambling to address their individual risk potentials.

The Role of the Netherlands and the Kansspelautoriteit

While Germany implemented the GlüStV, the Kansspelautoriteit regulates the gambling market in the Netherlands. This authority is the Dutch counterpart to the German GGL and monitors compliance with the Gambling Act (Wet op de kansspelen - Wok). A core instrument of Dutch regulation is CRUKS (Centraal Register Uitsluiting Kansspelen), a central register for player exclusions.

CRUKS functions similarly to the German OASIS system but is strictly limited to the Dutch market. Providers with a license from the Kansspelautoriteit must be connected to CRUKS to deny access to excluded players. In contrast to the German White List, which is managed by the GGL, CRUKS primarily serves to enforce player exclusions rather than listing licensed operators for end customers. The Kansspelautoriteit ensures that only compliant providers are active in the Dutch market, with player protection against addiction risks taking precedence.

Cross-Border Gambling and Licensing

A frequent question concerns gambling with providers holding a foreign license. Are German players allowed to play with Dutch providers with CRUKS integration? Legally, it applies: The Interstate Treaty on Gambling 2021 prohibits the distribution of gambling to players in Germany without German permission. A Dutch license from the Kansspelautoriteit does not replace the German approval from the GGL.

Conversely, registration in CRUKS has no direct legal effect in Germany. Since there is no automatic data transmission between CRUKS and the German player exclusion database (OASIS), a self-exclusion in the Netherlands does not lead to a block with German providers on the White List. Players using sports betting or other games are always subject to the jurisdiction of their country of residence. Anyone living in Germany falls under the GlüStV 2021 and must comply with the GGL's requirements, regardless of whether they are also registered in the Netherlands. This separation prevents protection mechanisms in one country from automatically applying in the other.

Playing with providers without a German license entails legal risks and does not provide access to the German player protection system. The GGL actively pursues illegal offers to further curb the black market. Players should check whether a provider is listed on the official GGL White List to play within a protected, legal framework.

Player Exclusion Systems: CRUKS vs. German Player Exclusion Database (OASIS)

The difference lies in geographical jurisdiction and the respective national regulatory authorities, not in the fundamental function as a player protection instrument. CRUKS is the central exclusion register of the Netherlands under the supervision of the Kansspelautoriteit. The Interstate Treaty on Gambling 2021 regulates the player exclusion database (OASIS) in Germany, which is managed by the Joint Gambling Authority of the States. An exclusion in one country does not automatically lead to a block in the other, as they are legally independent systems.

How CRUKS Works in the Netherlands

CRUKS (Centraal Register Uitsluiting Kansspelen) functions in the Netherlands as a central register for the exclusion of gambling participants. The Kansspelautoriteit, the Dutch regulatory authority, operates this system to protect players from the risks of gambling addiction and to enforce youth protection. In contrast to decentralized solutions at individual providers, registration in CRUKS is effective across providers. As soon as a player self-excludes or is excluded by third parties, all licensed providers in the Netherlands offering online casino games, sports betting, or poker gain access to this data.

The query takes place in real time. Before a player can participate in a game or make a deposit, the provider must verify the user's identity against the CRUKS register. If an exclusion is noted, access is immediately blocked. This system ensures that a once-imposed exclusion cannot be circumvented by switching to another licensed provider. The Kansspelautoriteit strictly monitors compliance with this obligation. Violations can result in high fines or the revocation of the license. CRUKS is specifically designed for the Dutch market and has no direct technical interface with the German exclusion database.

The German Player Exclusion Database and OASIS

In Germany, with the entry into force of the Interstate Treaty on Gambling 2021 (GlüStV 2021), the previously decentralized structure of exclusion systems was replaced by a central solution: OASIS (Online Query System for Exclusions). The Joint Gambling Authority of the States (GGL), which has commenced its operational work in Saxony-Anhalt, is responsible for administering and enforcing this player exclusion database. The GlüStV 2021 mandates that all permit holders for online casino games, virtual slot machines, online poker, and sports betting must be connected to this central system.

The player exclusion database covers not only the online sector but has been expanded to include arcades, pubs with gambling machines, and betting shops. This creates a comprehensive shield that ensures youth protection and the prevention of gambling addiction across all distribution channels. A central element alongside the exclusion database is the limit database. According to the requirements of the GlüStV 2021, a cross-provider deposit limit of a maximum of 1,000 euros per month applies. The limit database serves to monitor this limit, preventing players from circumventing the cap by distributing their deposits across multiple providers. The Joint Gambling Authority of the States ensures that the technical interfaces (Safe-Servers) of providers communicate correctly with the player exclusion database and the limit database.

Automatic Exclusion and Data Matching

A frequent question concerns the automation of exclusion mechanisms: Are players automatically excluded if they exceed limits? The answer is nuanced. Exceeding the monthly deposit limit of 1,000 euros does not lead to a permanent exclusion in the player exclusion database, but merely blocks further deposits with all licensed providers until the next monthly cycle begins. The limit database acts as a technical barrier here, not as an administrative exclusion.

An actual registration in the player exclusion database (OASIS), on the other hand, usually occurs upon the player's request (self-exclusion) or due to an authority order in cases of suspected gambling addiction or endangerment of third parties. The Interstate Treaty on Gambling 2021 stipulates that the exclusion of blocked players must be ensured through identification and authentication as well as matching with the exclusion database. There is no automatic, cross-border exclusion between CRUKS and OASIS. A player registered in CRUKS in the Netherlands can continue to play in Germany, provided they have not also requested an exclusion there, and vice versa.

From a regulatory perspective, this lack of automatic data exchange between the Kansspelautoriteit and the Joint Gambling Authority of the States is a conscious decision based on the sovereignty of national legal systems. Players must therefore take care of their player protection separately in each country. The Joint Gambling Authority of the States also publishes a "White List" that lists all legal providers in Germany, which facilitates orientation for players who want to comply with the requirements of the Interstate Treaty on Gambling 2021.

Regulatory Authorities: GGL and Kansspelautoriteit in Detail

The difference is evident in the responsible regulatory authorities. While the Joint Gambling Authority of the States (GGL) in Germany monitors compliance with the GlüStV 2021, the Kansspelautoriteit serves as its counterpart in the Netherlands. Both institutions manage national exclusion systems (OASIS and CRUKS, respectively), which are legally isolated and do not perform automated, cross-border data exchange for player exclusions.

Tasks of the Joint Gambling Authority of the States (GGL)

The Joint Gambling Authority of the States (GGL) is the central supervisory authority for online gambling in Germany. As a public law institution with legal capacity based in Saxony-Anhalt, it gradually commenced its work and has been fully responsible for cross-state tasks since January 1, 2023. Its establishment was a direct consequence of the Interstate Treaty on Gambling 2021, which provided for uniform regulation instead of the previously fragmented state competencies.

A core task of the GGL is maintaining the so-called White List. This list contains all providers who hold a valid permit for organizing online gambling. For players, the White List is the decisive criterion for identifying legal offers. Only operators listed there are permitted to offer sports betting, online poker, and virtual slot machines in Germany. The GGL strictly checks whether providers comply with technical requirements, particularly connection to the limit database and the central exclusion system OASIS.

Another focus lies on combating the black market. The GlüStV 2021 explicitly aims to counter the spread of illegal gambling by creating a controlled, legal offer. The GGL actively monitors the market and can intervene with sanctions in case of violations of the treaty's regulations, such as youth protection or advertising. This also includes monitoring sports betting providers to protect the integrity of sporting competitions.

The Kansspelautoriteit as Dutch Supervisory Authority

In the Netherlands, the Kansspelautoriteit takes on the role that the GGL fulfills in Germany. This authority is responsible for licensing and monitoring the Dutch gambling market. A central instrument of the Kansspelautoriteit is enforcing participation in CRUKS (Centraal Register Uitsluiting Kansspelen).

In contrast to the German White List, which primarily identifies licensed providers, CRUKS is a pure exclusion register. The Kansspelautoriteit ensures that all licensed operators match their player data with CRUKS in real time. If a player is registered there, access to all licensed gambling sites in the Netherlands is denied. This serves the same purpose as the German player exclusion database: effective player protection and addiction prevention.

While the GGL derives its authority from the Interstate Treaty on Gambling 2021, the power of the Kansspelautoriteit is based on the Dutch Gambling Act (Wet op de kansspelen - WKO). Both authorities operate on the principle of preventive control, but the technical implementation differs. The Dutch supervisory authority places great emphasis on immediate blocking effect upon registration, while the German system via OASIS offers a somewhat more complex structure with different types of exclusions (cross-provider vs. provider-internal).

Cooperation and Information Exchange

Despite geographical proximity and the similar objectives of the Interstate Treaty on Gambling 2021 and Dutch law, there is no automatic link between the exclusion systems. The question of whether the GGL and Kansspelautoriteit exchange information on player exclusions can be clearly answered with a "no" in daily operations. Registration in CRUKS does not lead to automatic blocking in the German OASIS database and vice versa.

This is because CRUKS and the German player exclusion database are national databases protected by different legal frameworks. The Interstate Treaty on Gambling 2021 does not provide for direct real-time matching with foreign exclusion registers. While there are efforts at the EU level for better cooperation against the black market, data protection and sovereign legal systems currently prevent a fully automated exchange of player data between the GGL and the Kansspelautoriteit.

For providers active in both markets, this means double effort. They must ensure that their systems are compatible with both the German White List and OASIS as well as CRUKS. A player who self-excludes in Germany can theoretically continue to play on Dutch sites, provided they have not also requested an exclusion there. This gap is often misunderstood. it is, however, not a flaw in the system, but a result of national jurisdictions. The GGL focuses on compliance with German regulations for virtual slot machines and sports betting, while the Kansspelautoriteit keeps the Dutch market in view. Harmonization of exclusion systems across national borders has not yet occurred.

Player Protection Measures: Limits, Bonus Terms, and Self-Control

The difference is evident in the technical implementation of player limits and bonus mechanics, although both systems follow the same protection philosophy. While the German Interstate Treaty on Gambling 2021 enforces a rigid, cross-provider deposit limit of 1,000 euros per month via the central limit database, the Dutch CRUKS register of the Kansspelautoriteit primarily focuses on total player exclusion. Both mechanisms serve youth protection and addiction prevention, but operate in isolated data spaces without automatic cross-border synchronization.

Deposit Limits and the Limit Database in Germany

In the German regulatory framework, financial risk management is strictly standardized. The Interstate Treaty on Gambling 2021 (GlüStV) stipulates that an individual deposit limit applies to all players online, which must not generally exceed 1,000 euros per month. This cap is non-negotiable and equally binds all licensed providers. For the technical enforcement of this cross-provider limit, the Joint Gambling Authority of the States (GGL) maintains a central limit database.

Every licensed operator of virtual slot machines, online poker, or sports betting must connect its systems to this database. Before a deposit is accepted, the provider checks in real time whether the player's monthly quota is still sufficient. This architecture effectively prevents players from circumventing their loss limits by using multiple platforms. In parallel, the previous central player exclusion database has been expanded to also include arcades and pubs with gambling machines, significantly increasing the reach of player protection in Germany. From a regulatory perspective, the limit database thus represents the technical backbone that operationalizes the financial protection barriers defined in the GlüStV and strengthens the integrity of the legal market against the black market.

Bonus Terms and Wagering Rules Compared

An often overlooked but crucial difference between the German and Dutch markets concerns bonus terms. The Interstate Treaty on Gambling 2021 contains no explicit legal provisions regarding the amount or type of welcome bonuses, but the Joint Gambling Authority of the States has formulated strict requirements for the transparency and fairness of bonus offers in its guidelines. In Germany, bonuses are often tied to strict wagering requirements intended to ensure they are not misused as a means to circumvent deposit limits.

In the Netherlands, however, the Kansspelautoriteit introduced stricter rules for advertising and bonus offers in 2023. Since then, providers with a Dutch license are prohibited from targeting players between 18 and 24 years old with specific bonus offers. Additionally, bonus terms must be clear and understandable, and there are caps on the amount of welcome bonuses to prevent excessive gambling incentives. While CRUKS itself does not set bonus rules, the supervisory authority ensures that bonus mechanics do not undermine player protection. For German players, it is important to know: a bonus offered on a Dutch site is not subject to German supervision and may therefore have different wagering requirements than a bonus from a German licensed provider.

Self-Limitation and Exclusion in CRUKS

In the Netherlands, the Kansspelautoriteit oversees the central register for player exclusion, known as CRUKS (Centraal Register Uitsluiting Kansspelen). In contrast to the German limit database, which primarily caps deposits, CRUKS is designed as a pure exclusion system. Players can voluntarily register themselves or have third parties request their registration, resulting in them losing access to licensed online casinos, sports betting, or physical arcades in the Netherlands.

The Kansspelautoriteit functions here as the Dutch equivalent to the German Joint Gambling Authority of the States. While the GGL in Germany manages both limits and exclusions (via OASIS), the focus of the Dutch authority is strongly on completely blocking game access for registered individuals. There is no direct equivalent in CRUKS to the German 1,000-euro limit. Instead, the binary decision of "access allowed" or "access blocked" takes precedence. This differentiation is crucial for understanding the difference between CRUKS and the Interstate Treaty on Gambling: Germany relies on controlled participation with strict financial caps, while the Netherlands relies on total exclusion from the legal market upon registration in CRUKS.

Youth Protection as a Common Goal

Despite the different technical instruments, both the Interstate Treaty on Gambling 2021 and the Dutch regulations under the supervision of the Kansspelautoriteit pursue the overarching goal of youth protection. In Germany, the participation of minors in gambling is ensured through strict identification and authentication processes as well as matching with the player exclusion database. The GlüStV explicitly prohibits the participation of minors and obliges operators to ensure that this exclusion is implemented technically and organizationally.

Youth protection is also a core pillar of licensing requirements in the Netherlands. The Kansspelautoriteit requires all providers falling under the CRUKS system to implement strict age verification procedures. The essential difference lies in networking: while the German Joint Gambling Authority of the States maintains a White List that publicly identifies licensed providers, thereby creating transparency for consumers, the Dutch system focuses more heavily on the internal enforcement of player exclusions. Both systems aim to prevent the development of gambling addiction and protect vulnerable groups, especially young people, from the dangers of gambling, with the Joint Gambling Authority of the States in Germany additionally serving as a proactive financial control body through the monitoring of the limit database.

Regulated Game Offers: Virtual Slot Machines, Poker, and Mobile Gaming

The difference is evident in geographical jurisdiction and the specific technical requirements for game offers. While the German Interstate Treaty on Gambling 2021 defines strict limits for virtual slot machines and online poker, Dutch law regulates these categories under the supervision of the Kansspelautoriteit. Both systems aim at player protection, but operate in separate jurisdictions without automatic data transmission of the exclusion registers.

Virtual Slot Machines under GlüStV 2021

Virtual slot machines, defined as internet-based replicas of terrestrial gambling machines, are subject in Germany to the strictest conditions of the Interstate Treaty on Gambling 2021. Since the treaty came into force on July 1, 2021, these games are permit-eligible under restrictive conditions to provide a legal alternative to the black market. The Joint Gambling Authority of the States (GGL) monitors compliance with these rules, which include a maximum bet of €1.00 per spin and a minimum game duration of five seconds.

A central element is the technical connection to the OASIS exclusion system. Providers must ensure that excluded players are blocked through identification and authentication. Additionally, parallel play on multiple online machines simultaneously is prohibited, which is controlled by technical systems such as the "Safe-Server". In contrast, the Kansspelautoriteit in the Netherlands regulates similar games, with the local exclusion database CRUKS having no direct interface with the German exclusion database. Players must therefore register or exclude themselves separately in each country.

Online Poker and Sports Betting Compared

The regulation of online poker and sports betting shows clear differences in implementation between Germany and the Netherlands. In the German legal space, online poker is considered a game without a banker, where natural persons compete virtually against each other. The Interstate Treaty on Gambling 2021 permits this form of poker but prohibits casino games with a banker (such as roulette or blackjack) in the pure online variant, unless they are designed as live broadcasts.

Sports betting is also permit-eligible but is subject to specific paragraphs of the GlüStV. The Joint Gambling Authority of the States has assumed responsibility for the permit procedures for sports betting and online poker since January 2023. In the Netherlands, however, the Kansspelautoriteit handles licensing more broadly. An important difference lies in player access: while German providers must be strictly connected to the OASIS database, Dutch licenses use CRUKS. An exclusion in one system does not automatically lead to a block in the other, as they are national databases. This means that a player blocked in Germany could theoretically still have access to Dutch platforms, provided they are not also blocked there - although this may violate local laws.

Mobile Gaming and App Regulation

Another important aspect often overlooked in the discussion about CRUKS and GlüStV is the regulation of mobile gaming. In Germany, all licensed providers must ensure that their mobile applications (apps) or mobile websites meet the same strict technical standards as the desktop versions. This means that the 1,000-euro limit and OASIS exclusion must also take effect in real time on smartphones. The GGL regularly checks the compliance of mobile offers.

The same applies in the Netherlands: the Kansspelautoriteit requires that mobile access to gambling is connected to CRUKS just as strictly as desktop platforms. Since many players primarily play on mobile devices today, the technical integration of exclusion systems into iOS and Android environments is crucial. However, there is a difference in app availability: while German providers often struggle to offer their apps directly due to strict guidelines from app stores (Apple/Google) and therefore often resort to web apps, the Dutch market is somewhat more flexible here, as long as CRUKS integration is guaranteed. For players, this means: the platform on which they play (desktop vs. mobile) does not change the legal jurisdiction. Whether you play on an iPhone or a laptop - the GlüStV applies in Germany, CRUKS in the Netherlands.

Online Casino Games and Live Dealer

The category of online casino games is viewed differently in the Interstate Treaty on Gambling 2021. The treaty defines these as virtual replicas of banker games or as live broadcasts of games conducted terrestrially. While pure virtual table games such as online roulette are handled quite restrictively in Germany, live dealer offers are part of the permitted market under certain conditions, provided they are offered by a licensed operator.

The Joint Gambling Authority of the States strictly checks compliance with technical security standards here. Providers must operate a Safe-Server that enables continuous electronic control. In the Netherlands, the Kansspelautoriteit permits a broader range of online casino content. The crucial point for players is the origin of the license: a provider with a Dutch license may not offer its services in the German market without German permission. The existence of CRUKS does not change this territorial restriction. Players should always check whether a provider holds a valid permit from the GGL to play within the framework of German player protection.

Payment Methods and Transaction Security

A practical difference that directly affects players in everyday life is the availability of payment methods. The Interstate Treaty on Gambling 2021 and the resulting guidelines from the GGL have significantly changed the landscape of deposits and withdrawals in Germany. In contrast, the Kansspelautoriteit in the Netherlands has set different priorities, leading to different user experiences.

Credit Card Ban and Alternative Methods in Germany

According to the guidelines of the Joint Gambling Authority of the States (GGL) for implementing player protection, the use of credit cards such as Visa and Mastercard for gambling transactions is prohibited in Germany. This measure serves player protection by preventing the accumulation of debt through easily accessible credit lines. Instead, licensed providers must offer alternative payment methods such as instant bank transfer, PayPal, Paysafecard, or Klarna, which allow for more direct control of spending.

This ban is one of the most visible consequences of the GlüStV 2021 for the end customer. It forces players to handle their budgets more consciously, as "invisible" credit limits can no longer be used. The GGL strictly monitors compliance with this ban. Providers that still accept credit card payments risk high fines or the revocation of their license.

Payment Methods in the Dutch Market

In the Netherlands, there is no general ban on credit cards for gambling transactions, although the Kansspelautoriteit encourages providers to promote responsible payment options. Instead, local payment methods such as iDEAL are very common there. iDEAL is a Dutch online banking system that enables direct bank-to-bank transfers. Similar to German instant bank transfers, iDEAL offers high transparency and security, as the money is debited directly from the bank account.

For players active in both markets, this means switching from familiar payment methods. What runs via PayPal or Klarna in Germany is often processed via iDEAL or local bank transactions in the Netherlands. Importantly, the choice of payment method has no influence on legal jurisdiction here either. Even if you pay with a Dutch method on a site that holds a German license, you are subject to the GlüStV 2021. Conversely, using a German payment method on a Dutch site does not protect you from local rules and CRUKS.

Transaction Security and Anti-Money Laundering Prevention

Both the GGL and the Kansspelautoriteit place great emphasis on anti-money laundering prevention. Licensed providers in both countries must undergo strict Know-Your-Customer (KYC) processes. In Germany, this is regulated by the GlüStV 2021 and the Money Laundering Act (GwG). Providers must verify the identity of players before larger transactions are permitted. The Joint Gambling Authority of the States checks whether these processes are effective.

Similar regulations apply in the Netherlands under the supervision of the Kansspelautoriteit. The difference often lies in the speed of verification. While German providers have often developed very fast, automated verification processes due to the strict OASIS and limit database integration, Dutch providers may have slightly different processes depending on the implementation of CRUKS and local banking standards. For the player, however, this means in both cases: high security and protection against fraudulent transactions, as long as they operate within the licensed market.

The Black Market and the White List

The difference is evident in practical enforcement, primarily through the respective lists of legal providers. While the Dutch Kansspelautoriteit actively blocks illegal sites, the Joint Gambling Authority of the States in Germany maintains a so-called White List. This transparency is intended to protect players from the black market by presenting clear, licensed alternatives for sports betting and virtual slot machines.

The GGL White List

The White List is a central instrument of German gambling supervision that creates transparency for consumers. It functions as an official directory of all providers who hold a valid permit under the Interstate Treaty on Gambling 2021. Originally, this list was maintained until the end of 2022 by the Ministry of the Interior and Sport of the state of Saxony-Anhalt. Since January 1, 2023, the Joint Gambling Authority of the States (GGL) has taken over this task and now manages the list centrally.

For players, the White List is crucial as it serves as the only reliable source to distinguish legal from illegal offers. Only the operators listed there are permitted to offer virtual slot machines, online poker, and sports betting in Germany. The GGL ensures that these providers meet strict conditions, including connection to the OASIS exclusion system and compliance with deposit limits. By publishing the White List, the legislature creates a legal alternative to the black market, which often offers no player protection measures. The authority regularly updates the list to promptly reflect license revocations or new approvals.

Combating the Black Market in the Netherlands

In the Netherlands, the Kansspelautoriteit pursues a different approach to curbing the black market. While Germany primarily relies on transparency through the White List, the Dutch authority uses active blocking measures. The Kansspelautoriteit is the functional equivalent of the German GGL and monitors compliance with Dutch gambling laws. Illegal providers who do not hold a license but access the Dutch market are identified and their domains blocked.

This proactive intervention differs from the German strategy, which rather focuses on channeling player demand into regulated channels. The Kansspelautoriteit works closely with internet providers to prevent access to non-licensed platforms. The goal is to dry up the black market by making illegal offers technically unreachable for users from the Netherlands. In contrast, the Interstate Treaty on Gambling 2021 relies more heavily on the obligation of providers to ensure compliance themselves and on educating players through the White List. However, both systems aim to maintain youth protection and competition integrity.

Risks of Playing Without a License

Playing outside the regulated markets of the Interstate Treaty on Gambling 2021 or CRUKS entails significant dangers. Providers in the black market are not subject to regulatory control by the GGL or the Kansspelautoriteit. This means that technical standards such as the maximum bet of 1 euro per spin on slots or the monthly deposit limits are often not adhered to. Additionally, the connection to central exclusion systems such as OASIS or CRUKS is missing, which massively weakens player protection.

Another critical risk is the lack of legal protection in case of payout problems. With licensed providers, players can contact the regulatory authorities. in the black market, there is no such instance. Fraudulent practices are more common here, as no regular audits for game fairness take place. The Interstate Treaty on Gambling 2021 therefore prohibits not only illegal gambling but also participation in the payment processing for these offers. Players should always check whether a provider is on the GGL White List or the corresponding Dutch list to avoid these risks. The evaluation of the treaty also shows that the spread of the black market remains a challenge that must be addressed through strict supervision.

Technical Implementation: Safe-Servers and Data Integrity

The essential difference between CRUKS and the Interstate Treaty on Gambling lies in the technical infrastructure of enforcement. While the Netherlands relies on the central CRUKS register, the German GlüStV 2021 requires the installation of decentralized Safe-Servers at each provider, which transmit real-time data to the Joint Gambling Authority of the States. This architectural difference determines how virtual slot machines are monitored and how player data is fed into the player exclusion database or the limit database, with no direct technical coupling between the Dutch CRUKS and the German OASIS system.

Safe-Server Requirement in Germany

A Safe-Server is a technical monitoring system that every licensed operator of virtual slot machines, online poker, and sports betting in Germany must operate. In contrast to pure database queries such as with CRUKS in the Netherlands, the Safe-Server functions as a local interface that records all game-relevant data and enables continuous electronic control by the regulatory authority. This measure is a direct consequence of the Interstate Treaty on Gambling 2021, which aims to prevent manipulation and secure the integrity of gambling operations.

The Joint Gambling Authority of the States (GGL) uses the data from these Safe-Servers to monitor compliance with legal requirements, such as the deposit limit of 1,000 euros. Without this technical connection, a permit to operate online casino games in Germany is not possible, as proof of data integrity and youth protection cannot otherwise be provided. The Safe-Server thus represents the technical backbone that distinguishes the German market from the unregulated black market.

Data Transmission to CRUKS and the Player Exclusion Database

The transmission of player data takes place in both jurisdictions via central registers, but these systems are technically and legally isolated. In Germany, the player exclusion database (OASIS) is maintained, into which providers must enter excluded players to prevent parallel play. This database has been expanded under the Interstate Treaty on Gambling 2021 and now also includes arcades and pubs. In parallel, the limit database exists, which monitors the cross-provider deposit limit of 1,000 euros per month.

In the Dutch system, the Kansspelautoriteit oversees CRUKS, the functional equivalent of the German player exclusion database. Although both systems serve player protection, there is no automatic data transmission between CRUKS and the German player exclusion database. A block in the Netherlands does not lead to an automatic block in Germany, as the Joint Gambling Authority of the States and the Kansspelautoriteit do not maintain a shared database. Providers active in both markets must therefore maintain two separate technical connections to comply with the respective national requirements.

Interfaces and API Integration

The technical connection to the exclusion systems takes place via standardized API interfaces implemented in the providers' Safe-Servers. For virtual slot machines and other online gambling games, the matching with the player exclusion database must take place in real time during the identification and authentication of the player. This integration ensures that minors or excluded persons do not gain access to the games, which is a central requirement of the Interstate Treaty on Gambling 2021.

The Joint Gambling Authority of the States monitors these interfaces to ensure that data is correctly transmitted to the limit database and exclusion registers. In comparison, CRUKS integrates exclusion data directly into the platforms of Dutch license holders under the supervision of the Kansspelautoriteit. The complexity of API integration in Germany is higher, as the monthly deposit limit must also be technically enforced in addition to the game exclusion. This double protection via Safe-Servers and central files makes the German system technically more demanding, but also more robust against circumvention attempts compared to pure register solutions.

About This Article - Editorial & Responsibility

Author: Sarah Weber - Casino Tester & Bonus Analyst Peer-reviewed by: Dr. Markus Hoffmann - Senior iGaming Compliance Analyst Last Updated: 2026-06-26.

This article on "difference between CRUKS and Interstate Treaty on Gambling" was written by Sarah Weber and peer-reviewed by Dr. Markus Hoffmann. Both regularly update the content regarding regulatory changes, license availability, and bonus terms. All statements regarding licenses, authorities, and legal frameworks refer to publicly accessible sources (GGL (Joint Gambling Authority of the States), Interstate Treaty on Gambling 2021 (GlüStV 2021)).

About the Author

8+ years of casino reviews, 200+ personally tested platforms in the EU and internationally. Former member of the eCOGRA Player Advocacy Program (2018-2022). Specialization: Wagering requirements, payout workflows, customer support evaluation.

About the Reviewer

12+ years in the iGaming industry, including 5 years as a compliance consultant for licensed operators under the Interstate Treaty on Gambling 2021. PhD in Mathematical Economics. Research focus: bonus mathematics, wager analysis, player protection systems (OASIS).

Responsible Gambling

Gambling can be addictive. If you feel you are losing control over your gambling behavior, please contact BzgA Gambling Addiction Help, Check-dein-Spiel.de, or use the central exclusion system (OASIS (central player exclusion system)). Set personal deposit and loss limits before playing with real money. Breaks and cooldown functions of the providers are not a sign of weakness - they are a tool for sustainable enjoyment of the game.

Legal Disclaimer

The information in this article serves exclusively editorial and comparison purposes. It does not constitute legal advice. The legal assessment of online gambling without a German license is a gray area and is subject to ongoing adjustments by the GGL (Joint Gambling Authority of the States). Players are themselves responsible for complying with local regulations.