Arcooine was a planet in the Companion Besh galaxy. A convoy of colony ships crashed on the world, stranding a number of refugees fleeing the Sith Wars. These beings established a relatively primitive civilization on Arcooine, divided into various kingdoms, and lacking the benefits of modern galactic technology. The locals developed their own Force traditions.
Behind the scenes
The planet's name is a pun off of Noah's Ark. Just as Noah's Ark was home to animals of every kind, Arcooine was home to aliens of all sorts.
Arcooine was the setting of the Primitive Campaign.