An Alliance is a pact or coalition between two or more people. In Dungeon Overlord, Alliances are a feature that allow players to band together for military, trading, or other purposes. Players who are in the same Alliance cannot attack each other. Additionally, players in the same Alliance can chat with each other, in the game, via the Alliance Chat option. This option is toggled in the Friend's Bar.
Players can request to be in an Alliance from the Alliance Profile.