About Flag Drill

Flag Drill is a small geography trivia gym for adults. It is built as a Cloudflare Worker with static HTML so every quiz has a real URL. The tone is a practice room, not a classroom and not an arcade. There are no accounts, no ads in this version, and no analytics pixels.

The default country pool is the 193 member states of the United Nations. An optional toggle adds territories, observers, and other extra flags. That toggle is labeled on the board so UN membership is never silently mixed with dependencies.

Flags

Flag images are loaded from flagcdn.com as SVG and w320 / w640 PNG. Emoji flags are not used. If flagcdn is unreachable, plates will be empty — the Worker does not proxy or host the flag files.

Dataset

Names, ISO 3166-1 alpha-2 codes, capitals, regions, and UN membership were vendored at build time from the public mledoze/countries dataset, then lightly edited for English trivia (Côte d'Ivoire, Cabo Verde, Turkey, a few capital conventions). The site does not call a live countries API when you play.

What this is not

Flag Drill does not measure IQ, school readiness, or health. It does not claim completeness of every flag that has ever flown. It is a drill for the UN list plus an honest extras switch.