Umm, none of those would be worth anything. Maybe $5 for Ogg from a TWD fanboy.
As a TWD fanboy, I wouldn't pay that for his autograph on a copy of GTAV.
I just don't see video games as a big autograph market. Maybe in cases where the game is about/sponsored by a particular person (Tony Hawk, Ivan "Ironman" Stewart, etc.), or if a athlete autographs the game that they are the player on the cover of the game, or there's just one or a small number of persons that created the whole game that also has some historical/cultural significance (like Howard Warshaw's autograph on a copy of E.T. for Atari2600). Beyond that there are hundreds (or thousands) of people that contribute to modern games.
A friend of mine worked for Sony and is in the credits for NBA 2K2, but no one would pay more for a copy of that game because of his autograph, but they might if Allen Iverson's was on it