Editorial Policy & Data Sources

Japanese Slot Guide separates factual information from advertising and affiliate considerations. This page explains how machine and hall information is researched, checked, and presented.

Machine coverage and retention

The machine database covers pachislot machines introduced for the Japanese market. Once a machine profile has been created, it may be retained as a reference after its normal installation period has ended or after current hall availability can no longer be confirmed.

Page retention is separate from current installation status and is not a legal-status classification. Installation periods, continued-installation treatment, and observed hall presence are checked separately from fixed specifications; the site does not infer an installation deadline from the rollout date alone.

Administrator research and official information

Numerical data, specifications, and explanatory information are researched and checked by the individual site operator. Official manufacturer information, official announcements, and public-authority information are treated as the primary public references when available.

The individual operator distinguishes official statements, independently checked facts, and the site’s own calculations or observations. The absence of an official source does not make information original research. Material obtained from another publisher must not be relabelled as Japanese Slot Guide’s own research. Public reference lists prioritize official first-party and public-authority sources; this preference never overrides attribution, permission, quotation requirements, or a source’s terms of use. If the basis for a claim cannot be established, it should be marked unverified or omitted.

How to read the labels on a machine page

• Official manufacturer values: figures explicitly published by the manufacturer.
• Administrator research: editorial review of published information, including secondary estimates. This label does not claim that Japanese Slot Guide ran the experiment or measured the machine.
• Illustrative calculation by Japanese Slot Guide: arithmetic worked from the stated inputs to explain a concept. An example is not an observed playing session.

Simulation estimates and measurements can have sampling error. Unless a sample size and method are documented, the individual operator does not imply a confidence range. A verification date means an editorial check occurred; it does not mean every probability was remeasured on that date.

Hall data policy

Hall listings are intended to help visitors identify and reach physical pachinko and pachislot venues in Japan. Factual hall information is kept separate from machine specifications and from commercial placement.

For hall names, addresses, official websites, opening information, access, venue rules, services, language support, and other operating details, the individual operator prioritizes the hall or chain’s official website and official announcements. Official social accounts, public-authority information, and direct confirmation from the hall may also be used. Independent on-site verification by Japanese Slot Guide may be used when the method and date are clear.

Third-party map, navigation, directory, or listing services may be used for navigation or cross-checking where their terms permit, but their reviews, ratings, photographs, proprietary descriptions, or databases are not treated as Japanese Slot Guide content merely because they are publicly accessible. The individual operator does not treat scraping or bulk copying from a third-party directory as an acceptable substitute for source verification.

Hall information that can change quickly should include a checked or updated date where practical. Opening hours, temporary closures, machine inventories, service availability, entry conditions, smoking rules, and access details should be rechecked before a reader travels. If the current state cannot be verified, the field should be omitted, qualified, or marked as needing confirmation rather than presented as certain.

Machine installation information on a hall page is a time-sensitive observation, not a promise that a machine will still be available when a reader arrives. The individual operator does not infer that a hall offers better settings, higher winning probability, or better expected returns merely from installation data, popularity, reviews, or commercial relationships.

Hall operators may submit evidence-based corrections without purchasing advertising. A correction request does not give a hall editorial control over unrelated content.

Corrections and updates

Machine pages include a verification or data-check date where practical. Confirmed specification data is not treated as stale merely because a fixed amount of time has passed. Hall pages should distinguish relatively stable business information from time-sensitive operating or installation information. Corrections are based on evidence and official information when available, not on commercial relationships.

Commercial independence

Advertising, sponsorship, affiliate revenue, complimentary benefits, or paid placement do not determine factual machine specifications, statistical calculations, hall operating facts, or whether evidence-based corrections are accepted. Sponsored hall placements are labelled and kept distinct from editorial ranking or comparison criteria.