I meant the system Bungie focused on. Two weapons, grenades and melee. Their golden formula for FPS. They mention it multiple times in the ViDocs on some of the Halo games. I'm not saying Halo was the first nor the game to perfect the genre.... just that it spawned a lot of franchises that copied the play-style. Btw... in my humble opinion, there is, and never will be, anything as good as Goldeneye. The good ol' N64 Goldeneye.