SlotLens Launches Tool to Compare RTP of Slots in Spain

SlotLens has launched an independent tool that allows users to query and compare the RTP values of slots among operators in the Spanish market. The platform collects the RTPs published by the operators themselves, retains the source and date of verification for each entry, and automatically publishes a public dataset with the data it manages to verify.

What the Tool Does and How RTP of Slots Works

The SlotLens tool differentiates three key concepts of RTP: configured RTP (the technical parameter with which a game is offered), published RTP by the operator (the value displayed on their website or in their terms), and statistically observed RTP (the performance calculated through empirical analysis). SlotLens registers each of these elements when available and avoids completing or estimating values that cannot be verified against an identifiable source.

SlotLens retains the exact source of each data point and the date it was verified. This traceability allows users and analysts to check whether a published RTP comes from a technical sheet of the provider, a page of the operator, or from a statistical sampling conducted by the platform itself.

Methodology: Sources, Verification, and Automatic Updates

SlotLens's methodology relies on the collection of values published by operators and on automatic verifications that update the database. The platform separates the availability of a game—whether an operator offers a specific slot—from the existence of a verifiable RTP for that title under that specific operator. This distinction reduces the risk of comparing a game listed in an operator's catalogue with an RTP that actually corresponds to another environment.

When SlotLens finds an RTP, it stores:

• the published figure (if available),

• the publication source (URL or document identified by the operator),

• the verification date, and

• a label indicating whether the data is configured, published, or observed.

If there is no verifiable source, SlotLens leaves the field empty instead of filling it with an estimate. The platform explicitly marks in each record which fields have been verified and which have not.

Public Dataset and Use Cases for Operators and Analysts

SlotLens offers a publicly accessible dataset that is automatically updated based on its collection and verification of data. The dataset is designed for analytical use by operators, platforms, and industry analysts, and for comparisons between providers and brands in Spain. Among the practical utilities mentioned by the platform are:

• internal catalogue audits by the difference between configured RTP and published RTP;

• comparisons of offerings among operators in the same market;

• document validation for regulatory compliance or transparency.

The company does not make predictions about game outcomes or state unverified values as verified. The public dataset includes metadata about the origin of each number and the verification date.

Distinction Between Availability and Verifiable RTP: Why It Matters When Comparing Operators

SlotLens emphasizes that the mere existence of a slot in an operator's catalogue does not imply that there is a verifiable RTP for that operator. A game may be available and simultaneously lack a published or verifiable RTP value. The tool marks this difference and displays it in its interface to avoid comparisons that mix catalogues with verified figures.

This approach addresses a common problem when evaluating catalogues: comparing a generic provider RTP with the RTP that a specific operator states in its environment may lead to errors. SlotLens conducts the comparison only when the specific operator RTP can be traced back to a documented source.

Limitations and Scope: What the Tool Does Not Do

SlotLens does not estimate or fill in missing data. When verifiable sources are lacking, the platform leaves the record incomplete and marks it as unverified. It also does not provide forecasts of slot performance or replace technical audits or official certifications that require inspection of the code or RNG by accredited third parties.

The platform serves as a source of verifiable data but is not a regulatory body: its value lies in the traceability and openness of the dataset, not in providing legal validity to an RTP value. Operators, regulators, and auditors can use SlotLens data as a public reference, but formal validations will still depend on the existing certifications and regulatory processes.

Expected Impact on the Spanish Market and on Transparency

SlotLens describes its goal as providing a useful data source for analysing the slot market in Spain without replacing other control mechanisms. For analysts and operators, the platform aims to facilitate cleaner comparisons between brands and clearer access to which values are published and which are not. The automatic updating of the dataset reduces manual tracking effort and allows for replicating verifications over time.

The original publication of this announcement appeared in the Gaming Sector.

Where to Use the Data and Next Steps for Professionals

Catalog, compliance, and product teams will find the dataset a practical reference for comparing fiches among operators and for detecting discrepancies between configured and published RTP. Analysts and consultants can integrate the dataset into market monitoring workflows or use it as input for reports. Transparency tools like that of SlotLens complement compliance processes without replacing technical certifications.

To delve deeper into the market and regulation surrounding slots, it is recommended to link the findings of the dataset with the evolution of applicable regulation and with the behaviour of catalogues in the casino sector. Technology and consulting providers may find business opportunities in services that automate RTP extraction and comparison for multiple operators, which is of interest to those managing catalogues at scale and to product teams in brands operating in Spain.

Alejandro Vidal, Casino Correspondent