A flags of the world quiz that stops at France, Japan, and Brazil is a brochure. Flag Drill deals all 193 UN member states, shuffled once, and walks them in a single pass. Each look is still four choices with a twenty-second fuse. The HUD counts Q 47 / 193 so you can see the remaining work. You can leave the tab; you cannot claim you finished the world if you only finished Europe.
The default pool is UN members only. That is a political list, not a complete atlas of every piece of cloth that flies. Kosovo, Taiwan, Palestine, and a set of dependencies sit behind Include territories, labeled as extras, not members. Turn it on when you want the harder edges of the map; leave it off when you want a clean membership drill. Either way, the board does not fetch a live countries API. The file is vendored.
Expect fatigue. That is the point of a gym. Nordic crosses start to rhyme. West African vertical tricolors swap their yellow stars. Oceanian flags reuse the Union Jack and then differ by a constellation you have not memorized. When a miss repeats, read the Similar Flags notes after the round instead of mashing Play again on autopilot. Capitals are printed in the feedback line so a miss still teaches something.
Personal best on this route is stored locally as correct count, longest streak, and — if you ever clear a full deck — elapsed time. There is no public leaderboard and no share-card art. If you want a short sitting, the twelve-question flag quiz is next door. If you want one plate per UTC day, use Daily Flag. This page is for people who said “the world” and meant it.