Editorial policy and sources

Checking the content

Country and territory names, capitals and regions use public data. Initial organization of flag colors, symbols and explanations has also used AI. The administrator checks images and reference material and makes corrections. Reviewed indicates that administrative check, not accreditation by a specialist institution. Where origins are disputed, we avoid presenting one account as certain. General country reference links are distinguished from primary sources supporting specific comparisons.

English origins and stories are based on the edited Japanese text. A source-change check prevents an outdated translation from silently being presented as current after the Japanese description changes.

Main references

• Japan Ministry of Foreign Affairs: countries and regions — names, regions and basic information
• United Nations: Member States
• International Olympic Committee: National Olympic Committees
• Flag and national-symbol explanations published by governments and embassies.

Results link to supplementary flag references and Japanese MOFA country information.

Game classifications

Classifications can differ depending on the level of detail included. We focus on major elements identifiable at ordinary viewing sizes and useful for deduction. Some countries belong to more than one region.

Corrections

When an error is confirmed, we recheck references and correct it. Please report the country or territory and the relevant detail through Contact.

Established: 27 August 2026 · Japanese revision: 3 October 2026 · English edition: 15 October 2026