Ikariam
On building an embassy and upgrading it to level three a player is then able to create an alliance. An alliance is a group of players with the same interests or goals. The players can also put their own units into each others towns for extra defense. With an alliance you can do join raids and work together on taking over towns. If you are the leader of the alliance, how many members you can have in your alliance depends on your embassy level. Also, you get a small amount of "bonus" resources each day, depending on the number of people in your alliance. An alliance has three jobs that can be assigned by the leader: the Diplomat, the General and the Home Secretary. The diplomat is responsible for making treaties, answering messages sent to the alliance, and editing the external alliance page which is viewable by all players. The General is responsible for overlooking all alliance members military movements, and has the ability to call off any attacks being made by alliance members. The Home Secretary is responsible for editing ranks within the alliance and editing the internal alliance page which is viewed only by the alliance members.