Darth Revan's complex

The Sith Empire during the Cold War desired to seize control of a complicated installation built on the planet Nar Shaddaa by the Sith Lord Darth Revan. Within this installation, Darth Revan had placed the Infinite Engine, a fragment of the Star Forge, which was maintained by enslaved alien workers, and the complex was protected by upgraded droids and defensive systems powered by the Infinite Engine.