This product includes Onyx PC. The top 3 reasons to play Onyx PC Play as Rowan, a secluded witch with a bad temper, who has to run after the people who stole her treasured ring given to her by her dead mother. Extensive, Epic Adventure Worth 30-40 Hours of Gameplay. Namable Characters - Fight With Your Friends if You Feel Like it. About Onyx PC Plot - Play as Rowan, a secluded witch with a bad temper, who has to run after the people who stole her treasured ring given to her by her dead mother. But... could it be that the ring hides more than just emotional value? Extensive,