This supplement is actually four different games. The first two games "War to End All Wars" with this expansion and "America Goes Central" use the existing rules from "War to End All Wars" while the other two games are simulations of the War of 1812 and the Mexican-American War. When using the game as a supplement for "War to End All Wars", the same rules are used, while granting additional North America playing area. The supplement has a color map of central North America similar to the one used in "The War to End All Wars: Box Set Edition".