From Outscape Wiki
Dark Orbs, also known simply as 'orbs', were originally intended to be purchased with real-world money to be exchanged for certain things in Outscape such as private games and ship skins. They would not be used to gain in-game advantages and it wouldn't be possible to exchange them for in-game credits. Outscape is strictly against pay to win.
Dark Orbs were never implemented, and their future status is unknown. When private games or ship skins are ready, the method by which they are purchased will be detailed.