// HACKER NEWS — CYBERSECURITY
Show HN: Learn Flags Quiz
Start with the world flags quiz below — all 197 countries, playable right here. No sign-up, and everything you miss links straight to a page that explains it.
Keyboard: 1–4 to answer · Enter for next · Esc to restart
The same countries split three ways, by how often people actually get them wrong. Start easy and work up — each level keeps its own progress.
The same games applied to the geography that is not a country — states, rivers and oceans.
Ten ways to play the same countries. Switch any time — your progress follows you.
The flags people get wrong most often — obscure designs with close look-alikes. Ranked, with what makes each one difficult.
Chad and Romania, Monaco and Indonesia, Ireland and Côte d'Ivoire. Every confusable flag pair, with the detail that separates them.
All the national flags using red, white and blue — far more than most people expect, and a common source of quiz mistakes.
The most recently adopted national flags, from the newest design backwards, with the year each one came into use.
The oldest national flag designs still flying today, ordered by the year each was adopted.