London: Making "Funny Games" was a traumatising experience for Naomi Watts because she knew real life people who were held as hostages in their own homes.

Watts plays a woman who is tortured by home invaders in the violent film co-starring Tim Roth and Michael Pitt, contactmusic.com reports.

She said: "I know two people quite well who've been held hostage in their homes. It does happen and it's really freaky - but it's not always as nightmarish as this, thank god. One of them lived in Beverly Hills, in a rich neighbourhood."

Watts concedes that the movie is tough to watch but is hoping people will start hating violent movies.

"We are so addicted to violence. We go to the cinema and we are numbed by someone's brains hitting the wall, because that is a bad guy that just lost his brains so we feel it's okay. In fact, not only do we feel it's okay, we cheer it on because we are so pleased.

"Hopefully, next time we go to the cinema we're more mindful of that... I felt disgusting after seeing 'Funny Games', but I still liked that I walked away and wanted to discuss it," she added.