Oceania's flags split cleanly into two visual families. The Australasian and Melanesian camp clusters around the Southern Cross constellation and Commonwealth-era blue ensigns — a British-blue field with the Union Jack in the canton, distinguished by the precise star arrangement. One nation breaks the pattern with a diagonal split carrying the Southern Cross on one side and a bird-of-paradise on the other.

The Pacific Island camp leans on islands, blue, and yellow: diagonal stripes with star clusters, a Y-shape splitting red, green, and black with a boar-tusk emblem, a multi-pointed star on a diagonal band, a solitary offset disc echoing the rising sun, a gold sun over wavy lines, and red fields bearing a small canton cross. The star counts and emblems usually encode the number of islands or districts in each nation.

This hub ships in two modes: type the country from the flag (type-in) and pick the right country from four choices (multiple choice). Both cover all 14 Oceanian states. Start with multiple choice if the flags are unfamiliar; graduate to type-in once they click.