Gameplay and Story "delta theory": http://www.gamasutra.com/php-bin...
"We had this theory that games tell two stories. There's the "story story" which is the cutscenes and the dialogue, and the "gameplay story" which is the story that's described by the actions you take in the game world. The theory was that the closer you could bring those two stories together, the more satisfying the game would be. I spent years and years reviewing games, and that's something that always bothered me in games, where the delta between the two stories was real high. I promised myself someday that if I ever got the chance, I'd try to make a game where that delta was almost zero. It was a conscious decision that we wanted to try and keep that world."" - Graham Sergeant
More in the Portal postmortem: http://www.valvesoftware.com/publica... - Graham Sergeant
ace - top find! - zeroinfluencer