01. Choose a difficulty
Five levels, from Easy to Impossible. Each level uses a different set of flags.
How to play
02. Identify 10 flags
Select one of four answers for each flag. The correct answer is shown after each selection. Timed mode allows 10 seconds per flag; a timeout counts as an incorrect answer. Untimed mode has no limit.
03. Results and sharing
Results include a score and answer review. Shared links reproduce the same round and game type. The daily challenge mixes all five levels and resets at midnight UTC.
Flag coverage
Countries covers 193 United Nations member states plus the two observer states, Palestine and Vatican City. Difficulty levels are assigned editorially. Flags are displayed from a bundled snapshot of the flag-icons collection; political symbols can change over time.
Countries + Territories adds 40 flags of territories, dependencies and associated states. The selection uses distinct flags from the same collection; entries that repeat a country’s flag are excluded. Daily and permanent challenges use Countries.
Privacy
No account, advertising trackers, or analytics cookies. Your results live only in your browser and can be cleared from My stats. The hosting provider may process standard request logs. Opening an optional support or sponsor link takes you to that provider, whose privacy policy applies.
Funding
All levels are free. Optional contributions and labelled sponsor placements cover running costs.
Credits
Flag illustrations by flag-icons (MIT). Country names from countries-list (MIT); territory names from flag-icons (MIT). Fonts: Bricolage Grotesque and DM Sans (SIL Open Font License).