Joss Whedon thinks 'The Avengers' fans should feel ''exhausted'' and ''fulfilled'' when they watch the movie.
The 47-year-old director compared the superhero film to his latest horror-comedy motion picture 'Cabin in the Woods', and joked he will be glad when he no longer has to film the movie.
He said: ''I want them to feel exhausted and fulfilled. Not unlike 'Cabin,' it's a ride, and we put the screws to them. We really put the characters through it, and we want the audience to be with them every step of the way and come out of it going, 'That was an extraordinary experience, and now I want to pay to see it again.'
''The most satisfying thing about 'The Avengers' is that soon I will finish it.''
Robert Downey Jr., Chris Hemsworth, Chris Evans, Scarlett Johansson, Mark Ruffalo, Tom Hiddleston and Samuel L. Jackson all star in the movie, which tells the story of Nick Fury (Samuel) and a special team who form a group of super humans called The Avengers to do battle with Loki (Tom) in a bid to save Earth.
Joss admitted the star-studded cast had a ''really fun'' energy amongst them, even though sometimes he had to remind the group they were supposed to be working and not at a party.
He added to MTV News: ''When they would be together, the energy that they would give each other, the way they play off each other, the way they protect each other narratively, making sure that whoever they were coming up against had as much juice as they did.
''It would be easy to imagine that they would be all be like 'me, me, me,' and it was always 'us, us, us,' and that was really fun.
''Except sometimes they would just gossip so much and talk. I would have to say 'Guys, we're rolling. We have to make a movie. This isn't a party; this isn't the green room.'''