A totally gutted quote from Shigesato Itoi, the creater of Mother (AKA Earthbound, AKA We’ll Never get the Third One Legitimately so Play the Translation):

A game isn’t something that can be made by one person alone. Well, it’s possible that a really hard-working game creator could finish a game all alone, but even then he would still need a player.

Games grow and mature when they’re created, played, and conveyed over and over…

…The truth is, in the end, the player is the one who completes a game’s creation.

Original (and full) quote can be found here [earthboundcentral.com].