A puzzle adventure game set immediately after the events of Myst. Having been rescued from the efforts of his sons, the main non-player protagonist Atrus enlists the help of the player character to free his wife from his power-hungry father Gehn. Unlike Myst, which took place on several worlds known as Ages, linked together by special books, Riven takes place almost entirely on the Age of Riven, a world slowly falling apart due to Gehn's destructive rule.
Probably my favorite Myst game. The scenery is amazing and the scope of the game is impressive. The game play is perfect.
I only wish that I didn't have to keep changing disks for the different islands.