Home supply centers: Units may be built on any vacant supply center that has been held for a fall. (i.e. all supply centers controlled by players are considered their "home supply centers" for the purpose of building units)
The first turn: builds The game starts with a build phase for every power.
Special kick-out after first build: If a player does not check in during the first build phase his status is immediately set to "Left" and the country gets a "default build" so another player can take over in this early stage.
Globe: The map is a globe, so you can leave the map on the left side and enter at the right side.