Many worlds, many cosmoses... so-called "parallel worlds" which should never have interacted. Nor did they... until that day. The "Great Spacetime Quake" began in one of the worlds, demolishing the dimensional walls that kept all the worlds separate. The result was the commingling of those worlds, and the birth of many new ones to form the Multidimensional World. With this new world came new meetings, and those new meetings begat new wars. The newly-formed Multidimensional World was gripped by chaos well after its founding, only at length settling into several new orders.