I beat every game I get not matter what, I have to finish it. Not necessarily at 100%, but just until I see credits. I just like analyzing everything and watching the story unfold to find out if it's either generic or something totally original. And I don't read reviews until I finished the game.An example would be Halo. Started playing it and was like ok great another escape the ship kill the aliens Half-Life Duke Nukem type FPS, but then when I really started to play it some more I was literally getting hooked with every bullet that killed those stink convenant bastards.The only games I don't really finish or even try to finish would be handheld games. Just don't have that umph to make me wanna see the ending. Only a few of them I actually finished and I can count them on one hand.
99.99%. It's a habit. Can't move on to a next game without beating it.