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The core is the region at the center of a world. This includes the central 4 continents, and by most definitions probably extends significantly farther. Control of the core often provides a strategic advantage to a tribe while a world is still growing, because the core contains the most developed villages and can then expand outward into other regions as their villages are developed more. The core loses importance later in a world's life, as the rim grows slower and most villages at least half a continent away from the rim are fully upgraded. For example, Vengeance in W1 (originally TW) is the dominant tribe in the world, but it does not dominate the core; in fact, it mainly consists of a thick ring around the core.