http://imdb.com/title/tt0185937/ yup, all fake. It was a neat idea though. They should have flat out lied and said this is real. that would have scared people
When all three of the actors showed up to present an award at the MTV Movie Awards that year...that probably cleared up any doubts for most people...
The marketing suggested that it was real at first but it quickly came out that it wasn't--I wish that I didnt know that it was fake--I would have been more scared