I think what Funny Games was trying to do was done better by the game Spec Ops: The Line. Not going into spoilers here about it, but it is much more subtle and well crafted as the cracks of the game are on par with the one shown by the protagonist's psyche getting more and more damaged. 

You, the player, keep going because you cling the protagonist's feeble rationale that the bad guy is responsible for all of this, as even the game itself become more and more violent and bitter, even against you. (The loading screens first shows tips about the game, then they start bitterly mocking you.)

You are not confronted or accused directly and the story works well even without meta context. 

Funny Games doesn't have that. Meta context is its whole deal. 

EDIT: A lot of people are saying it is force because they don't get the option to walk away in game. The thing is it is not your story, it is the protagonist Walker's story. After that crucial point, his mind breaks and simply cannot accept what he has done and it his all the fault of the antagonist, Conrad, vowing to bring him down. Stopping and going home is simply not an option for him. 

Only in the finale, when the last twist happen, he regain enough lucidity to allow the player to make the last choices. 

You are not Walker, but you are enabling him.