Grinding.
Trying to fill the missing hours in a games length with repetitive booring stuff is not the way to do things.
I understand MMO's have it, cause they need something for people to to, once they've done all the developers had to offer, and no matter how much they make, people will get through it before the next content patch, they can only add content at a certain speed, so the alternative to grind in this case would be no gameplay at all.
But when it sticks it's ugly nose into singleplayer games, that are done from start to end, and not something that'll be continually added stuff to, it just shows that the developers ran out of money or ideas for more stuff, or tried to extend the length of the game by filling it with a ton of "Meh".
Also, games that put a ton of money into making pretty looking, high poly graphics, only to make crappy animations.
Also, games where the stuff that your character could perfectly pass through is unpassable, i mean if you're gonan define the boundry of the world, could you please do it with something else tha a 2 foot fence, which our double-jumping hero can't seem to pass for unknown reasons?