Timeline 12: The Great Hyperspace War

Timeline 12: The Great Hyperspace War is the twelfth in the series of in-universe videos, providing backstory for the upcoming Star Wars: The Old Republic video game. The video is presented in the form of a record entry made in the Jedi Archives by Jedi Master Gnost-Dural.

Synopsis
In a massive war, the Sith sought to destroy the Republic and kill the Jedi. Defeated, only a small number of sith survived.