I cannot comprehend how you could possibly describe it as suberb, unique or original.
The basic principle of a character being able to control his reality with a remote control has been done countless times. I think the first time I saw it was in a Duck Tales comic book when I was a little kid. Since then it's been rehashed in such films as "Stay Tuned" and, more recently, "Click".
It has, however, never been used (that I'm aware of) in a similar context as 'Funny Games'... but there's a reason for that. It's not that nobody has thought of it or that it's a groundbreaking plot device.
The reason, as far as I can see it, that it hasn't been done - is because it's fucking stupid and from a screenwriting perspective, it's downright lazy. There are other (clever) ways in a script to express the same thing without resorting to gimmicky escape hatch methods like this.
I found the ending of the film to be one of the least satisfying conclusions to an otherwise decent flick that I have ever encountered. Especially the appallingly explanatory dialogue while they are sailing away.
It's a shame cause the film showed a lot of promise, albeit largely through recurringly shocking and degrading imagery.
But then again, I seem to be alone on this one once again - as pretty much everyone else thinks it's some sort of masterpiece.
The film reminded me a fair bit of parts of 'A Clockwork Orange'. However if Alex had picked up a remote and rewound part of the narrative, I wouldn't regard it as highly as I do. In fact, the film would've annoyed the fuck out of me like this one did.
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The scene in question was "very exciting", I'll give you that. But that doesn't make it genius.