> But people often say "FPS" to mean specifically "games like Quake and whatnot". Under that definition, shallow gameplay is part of what makes a game an FPS.
That seems to be unfair to Quake - there's a fair amount of depth and strategy involved, mostly with the hogging of powerups. I thought Quake 3 was just a game about two guys bumblebee dancing while trying to shoot the other, until my mind was expanded by a top Quake 3 player explaining his thought processes in the below video - the vast bulk of the talk is about map control, not reflexes.