The cyber-planet Vexillium is one - the first, to be true - of a family of imaginary planets known as the ImagiNations. ImagiNations is a web-based planetary game invented by Edward Mooney, Jr., allowing the players to create their own countries on an imaginary planet. Flags are a special issue on Vexillium because the fist generation of players came from the world of vexillology.