Xconq is a multi-player, empire-building strategy game in which players contest for world domination. In the standard game, each player (31 players are allowed) starts with a few towns and cities, and may build infantry, armor, airplanes, and ships. Each player's actions are hidden; speed and surprise are important. Any or all sides may be played by the computer. In addition to the standard game, Xconq includes a game design language (GDL) that can be used to define a wide variety of games. Games already in the distribution's library include everything from basic combat to elaborate world models, with time periods ranging from ancient history into the distant future. Xconq has a huge number of features, and a lengthy manual describing them.