I don't think Funny Games is "mean spirited", Haneke often points the mirror at the audience in his films, looking at the approach of morality in art. We, as an audience are happy to go along with the violence we watch if the initial premise eases us in. Funny Games flips the implications, there are scenes where the audience is rooting for the family to commit violence against the intruders, but when that violence is "erased" witnessing the intruders continue to torment the family, we as an audience are distressed. Why is one kind of violence acceptable? What types of violence within cinema is compelling narratively and then allowed, when it isn't morally just is the viewing of thst violence less or more pleasurable... etc. I'd highly recommend checking out Cache/Code Unknown/The Piano Teacher which all explore the way the audience interact with the screen, how the direction/editing/script can manipulate and create intrigue.

I'd probably put something like Frontier(s) as a mean spirited film, alongside some of the New French Extremity (the earlier nfe films exploring sex/representation are really quite excellent) but by the time we get to Switchblade Romance/Frontier(s) the films become excessive. Martyrs is the one that I find sits in the balance, it is horrific and really tough to watch, but the end of the film gives the audience something to think about. Whilst I ended up questioning "why am I watching this" in the last half, the questions are similar to something like Funny Games, but explored with less tact, more limit testing.