Do you own every game from a franchise?

[Hawk]

Hmmm, let's see. I own all of the main Mario games, all Metroid games, all Zelda games (with the exception of the GameBoy games). I also own all three Thief games, both Gears of War, all three Timesplitter games, all Twisted Metal games, all X-Com games, and both Dungeon Keeprs.

Honorable mentions are Silent Hill (I own every one but the first one) and Might and Magic (I beat every one except for I and VIII).

EDIT:  I have all the Half-Life games, Mario Kart games, Halo games, and Super Smash Bros games.