National flags are some of the world’s most familiar symbols. An online quiz measuring 511,581 guesses from players around the globe reveals which flags people identify quickly, and which ones are often mistaken.
The data records how many times each flag was correctly chosen, shown as a percentage. Some flags stand out because of simple designs, strong national branding, or frequent appearance in world events. Others, especially those from smaller nations or those with similar color patterns, are far less recognized.
In this gallery, we explore the most and least identifiable flags in the world. Want to know which countries’ flags feature in the list? Click to find out.