The Legend of Zelda: Oracle of Seasons and Oracle of Ages are getting the Virtual Console treatment as the two Zelda titles, originally released for Game Boy, are being ported and due for release on May 30.
While they can be treated as two separate adventures, the two are actually interconnected and play as one bigger story arc. As with the original games, so too will the VC versions carry passwords upon completion, which you then can enter into the other title at the game start to finish the adventure proper.