The MagicBox is reporting more details on Sony’s Siren 2:

Sony has released new tidbits on its PS2 horror adventure game SIREN 2 (Forbidden Siren 2), the game will have at least two main characters. The story takes place in an abandoned island, where all human disappeared in a mysterious way 29 years ago. You can find a lot of ruins, collapsed buildings and ship wrecks in the island. The Optical Illusion System will be enhanced in the game, you can see through from both human and animal eyes as well; and you can receive helps from companions in battles to rescue partners.