Forty-two countries, six continents, and the last player standing takes the world.
Take at least one country in a turn and you draw a card at the end of it. Three of a kind or one of each is a set; a wild stands in for anything. Trade a set while placing armies. The value climbs for the whole table every time anyone trades: 4, 6, 8, 10, 12, 15, then five more each time. Hold five and you must trade before you do anything else. If a traded card names a country you hold, two extra armies land there.