VEX is, quite simply, a delightful card game on flags.   In each set there are 200 flags from various political entities (such as Nations of the World in VEX I) in the total population.  Each deck is packaged 60 cards per box, and the chance of getting any single flag is the same as all others.  No rarities, no uncommons!

VEX I through VEX V are complete, with 200 cards each, and all five sets are available immediately.  With 200 images for each set, the total number of flag cards produced is 1000!

This site, www.sixsided.com  has detailed information about the five different editions.  VEX I shows flags of Nations of the World.  VEX II expands the flag population with 200 new images of states and provinces, also packaged 60 per box, and includes flags from all the states, provinces and territories of the United States and Canada and a dozen other countries.  VEX III adds even more cards with 200 new images of historical flags from around the world.  VEX IV adds more sub-nationals (from Argentina, Japan, Switzerland, etc.), and VEX V shows international flags, signal flags, flags of heads of state, etc.