Flagory, an atlas that makes you learn the flags

Field notes

The site organizes its 254 entries into regional sets, colour and symbol indexes, look-alike groups, and 58 ten-question quizzes. Its Daily Hoist gives every visitor the same date-derived set of ten flags, making scores comparable. Source handling is unusually explicit: the page identifies the Wikimedia Commons file and licence for each image, reports exact image-derived colours, and says when an entry lacks a design-history note rather than supplying unsupported text.