"You see, both feature very two-dimensional protagonists."
Insta-fail.
Really. Have you NEVER HEARD of 2nd-person narrative? This is as old as the hills, he is SUPPOSED to be an empty shell for the player to more easilly immerse into. Fuck, this comparisons between films and video games is so amateur. Seriously: FILMS AND GAMES ARE NOT THE SAME!
"you take on an egghead scientist, which automatically makes you assume that he was a loner for being so smart."
Ohhh.... GOD... My brain, the stupidity of your comments. Have you even PLAYED ANY of the Half life games?!?!? Gordon Freeman has many friends, he works in a lab FULL of scientist! There is no romance. Either you have not played half life 1 or 2 or the ONLY game and the ONLY film you have seen is Half Life 2 and Twilight because that is the only way I see you making a link between them.
Of course they have SOME things in common, they are both American productions but you could say that about THOUSANDS of productions. Really there is nothing that is distinct between BOTH of them, nothing that ONLY Half Life and Twilight have in common. Nothing, nadda, dick all, budkiss.
I hope you didn't put too much thought into this as if you did I pity for your deductive reasoning.. either that or you ARE a troll, even if you don't want to admit it. Your comparisons are entirely superficial and tenuous.
What rambling nonsense.