Matoran Universe

The Matoran Universe is a system of domes, under the surface of the Bionicle Planet. It was made by the Great Beings and watched over by the Great Spirit Mata Nui.

History
The Matoran Universe was created by the Great Beings over 100.000 years ago, who set Tren Krom to watch over it, because Mata Nui didn't exist yet. Then Mata Nui was born, and he was set to watch over the Universe, while Tren Krom was exiled to a barren island and fused to a rock in a cave. Also, the Brotherhood of Makuta and the Hand of Artakha were created, the first one to create Rahi, and the second to enforce order in the Universe. But the Hand didn't last very long, and was replaced by the Toa. The Order of Mata Nui was also created around that time, to carry out Mata Nui's will. The League of the Six Kingdoms once tried to overthrow Mata Nui and sieze control of the Universe, but were defeated by the Brotherhood, a member of which got an idea how Mata Nui could really be overthrown. This Makuta, Teridax, soon took control of the Brotherhood and devised a plan to control the Universe. About 1.300 years ago, the Brotherhood infected Mata Nui with a virus that gradually put him asleep. When Mata Nui finally fell asleep, 1.000 years ago, a great earthquake shook the Universe, in an event known as the Great Cataclysm. But Mata Nui was also dying and was close to death when the Matoran returned to Metru Nui. A group of Toa was sent to Voya Nui to recover the Ignika, Mask of Life, and heal Mata Nui. But they were too late and Mata Nui died. The whole Universe would have been flooded in about three days, but Matoro sacrificed his life to revive Mata Nui. But the Life in the Universe was still in danger, because the Brotherhood found a way into the Universe Core, and so a countdown was triggered in the Ignika, at the end of which it would drain the life of all beings in the Universe.

Trivia

 * The islands and regions in the Universe are arranged in some kind of pattern.