Sato and Okura both worked alongside Toyama in the Siren series as lead character designer and lead game designer respectively, and Sato also worked as producer of The Last Guardian.
Okura was also lead game designer on the Gravity Rush series.
Toyama is best known for directing the first Silent Hill game by Konami, and subsequently developing the Siren horror game series.
IGN had previously reported that the game would be a horror action-adventure game.